Bản quyền tác giảDAU SY HIỂU CAC KHAO SAT VE TINH DAC BIET CUACAC TINH CHAT DAN DIEN VA TU CUA CHAT NGHICH TU KICH THUOC NHO LiCu,0, LIEN QUAN DEN SU DOPING NO Ma chuyén nganh 01.04.07 V
L EET 5
PncyHok 2.3 Cxema J1 TấDMOOðDaỉOTKH KDHCT8.IJIOB: | — ềpa3€II, 2 — K€DAaMHM€CKHẽÍ 3K€/IOễ, B KOTODOM OOpa3ell IOMGIII€H B edb, 3 — Iedb, 4 — HATD€BaT€:Ib Iewqnw, 5 — TeDMOIIapa Cu-(Cu-Fe) € XO/IO/IHBbIM KOHIOM B TepMoce C T8IOIIHM JIbBJIOM 6, 7 — DerYy.14tOHwf OOK Te€DMOpeTYJ11ropa PHẲ@ (bP) — 101, 8 — CHJIOBỌlÍ OOK TepMoperysaATOpa PH® — 101 (BC), 9 — KpblliKa Bxoya ned
C BXO/OM Ta3OBOlÍ rejns, 10 — Wbroap C KHKHM a30TOM JIA (ĐHJIETDOBAHH4% resus, 11 — ceTb T€zIH4. aTMocdepax.
Cxema JIA TEDMOOƠDaỉOTKH KDHCT4J1IOB IIOKA3aHa Ha puc 2.3 Kpucrasipl IOM€II€HB B II€HTD€ II€HKH, T©MIICDATYDA KOTOPOH KOHTDOJIHDOBAHA TepMoperyatopom PH® — 101 (6nokn BP, BC) go ToqHocTrn + 1°C, pu 3alaHHOH Temiepatypbl OOxKUra Bo Bpema Õ?KHTaA BO3YIIHOK WIM WH€DTHHIl TAa3OÒPA3HHIf aTMOcdepbl BOWYT B IICHKYV H€D€3 BxOya IeqKH B KaqecTBe IHCTOTBI HHepTHOrO F434 (T€IHH) MbI HCHO.JIB3OBAJIH CHCTeMy XOJIOHHOTO (H;ISTDHDOBAHHM4 C IOMOIIBIO ?KHJIKOTO a30TA.
Jit CpaBHHT€JIbHỌÍ OI€HKH COJI€D3XKAHH1 B OƠPa3HaX Os ỐBIJIH W3M€D€HBI MacCbI ÕDA3IIOB C TOWHOCTBIO JO MHKDOTDAMMA H D€HTT€HOTDpa(MM€CKH OIID€H€/I€HBI BCJIHHHHBIL WapaMeTpa c UX 23/I€M€HTADHOI #q€lKH HO HW IIOCI€ IIDOH€HTYDBI T€DMOÒPaAĐOTKH.
2.3 PentTrenorpaduueckne HCC.I€JI0BAHH1 2.3.1 PeHTreHoBCKHH ()A30BbIl aH3.1H3 [ẽOCKOJIEKYV KaHad (a3a HO/IHKDHCTđJLIHd€CKOTO oOpa3ila HM€€T KDHCTđ/ILIHH€CKVIO D€HICTKV C XapaKTepHbIM HaOOPOM M€?KI/IOCKOCTHbIX pacctosHHi d M€XJY IAD4/LI€JIEHBIMH KDHCT4JIOTDaAQWH€CKHMH TI/IOCKOCT#MH, D€HTT€HOBCKH€ /JIYHH OTDA3KAIOTCW OT KDHCTAJLIOTpadMWd€ccKOl ILIOCKOCT€I H IHỦDATHDV4 /AIOT D€HTT€HOTDAMMY C XapaKTePHbIM TOJIbKO JIA /IAHHOl a3bl HaOOpoM ÕPp2ITTOBCKHX VTJIOB 8 (VTFOJI M€?KJV IIAAIOIHIHM JIYHOM H OTDA?KaIOII€l IJIOCKOCTbIO) H OTHOCHT€JIbHbIX HHTCHCHBHOCTeH w(ÙpaKHHlÍ OTpaK€eHHI.
J#paKHHOHHa% KapTHHa MHoroda3Horo OỐÔP43Ha ID€/ICTAB/JId€T codon HAJIOK€HH€ /IW{DAKHHOHHBIX KapTHH OTJI€IbHBX (a3 Ilo HOJIOSK€HHEO IH{DAKHHOHHBIX MaKCHMYMOB (HHKOB HJW D€d/I€KCOB) Ha /IHDAKTOTDAMMe€
OIID€HG/JIIIOT VIJIBI O, a 34T€M DACCHHTBIBAIOT 3HAYCHHA M€?KHI/IOCKOCTHBIX paccTosHuit d B COOTB€TCTBHH Cc YDaBHeHWeM Bpằrra-By.Isda:
2d⁄sin8 = À (3.2) rye h- AJIMHa BOJIHBI DCHTITCHOBCKOTO H3JIY4UCHHA.
B 9ToK padoTe WIA p€HTT€HOBCKOFTO (a3OBOrO aHann3a (PDA) HCIIOJIb3OBAJIHCb ABTOMATH3UPOBaHHble D€HTT€HOBCKHN€ wWpaKToMeTphi JIPOH-3, HPOH-4 (puc 2.4)[87] Ha ủ3/1yqeHWH M€/IHOèÍ D€HTT€HOBCKOI TDYỉKH Cc JJINHaMH BOMIH: A(CuK,;) = 1,54051, 4(CuK„¿;) = 1,54433 llpn ugentudukanun (a3 HCIIOJIb3OBAJIN Oa3y 1aHHbBIX [CDD 1o IopOHIKOBBIM Jud@pakTorpamMam [88].
KIOB€T JWIA HCCJIGJIY€MBIX OOpa3llOB H 3aBHCHMOCTb YIINHD€HH5 D€HTT€HOBCKOTO ped;IeKca IIO IIIKaJIâ 2ỉ OT Da3M€DA KDHCT8/1IOB IOKA3AHBI Ha DWC 2.5.
CKOpOCTb CKaHHDpOBaHM1 1#(ÐpaKTOMe€TDA COCTAB/I11a 2+5 TpA/MHH IIA Kaq€CTBa D€HTT€HOBCKOTO HaJIH34, IIDH IID€HH3HOHHOĂ 3aIIWCH 1W(pAKTOTDAMM A UX HHHHIWpOBaHH41 - 0,25+0,50 Tpa//MHH Tlopomok Kpuctanna Ge (a 5,6567(6)) A H€IOJIbE3OBAH B KAH4€CTB€ BHYTPeHHErO 2TA/IOHA, WTO IO3BO.ISJIO OIID€/I€/I1TE ỐP2ITOBCKH€ YT/IbI OTpaxKeHHA 2ỉ € TOqHOCTbiO He xy3%e +0,02° To
7WDAKTOTDAMMAM, CHATbIM C TDAH€lÍ MOHOKDHCTAJLIOB, ÕBIJIH IOJIYH€HBI AHHbIe oO HX ODH€HTAHHH MO OTHOIHICHHO K KDHCTA/JUIOFpaWu€CKHM ocaM j/|J13
PucyHoK 2.5 a) IODOIIKO-OỐDA3HhHIlÍ (JIeBasd) TB€P/IBIlẽ I/IOCKHẽÍ (IpaBa3) oOpa3ell B KIOB€Te Ô) 3aBHCHMOCTb YIIID€HH D€HTTF€HOBCKOFTO D€()JIeKca HO
IIKa7Ie 2ỉ OT pas3Mepa KDHCT821/IOB.
I€IHH3WOHHBX OIID€IGJI€HHf IIAPAM€TPOB 2JI€M€HTAPHOÍ AYCHKH Ha 7WPAKTOTDAaMM€G BBIÔWHPpaJW p€j:I€KCBI Cc OOJIbLIMMH ỐP2ITOBCKHMH VTJIAMH OTDaX€HH1 6, Tak KaK Cc DOCTOM OIIHÔKA OIID€JI€/ICHH1 M€?KIIIOCKOCTHBIX paccTosHuit d De3KO yM€HbIIIAa€TCS:
2.3.2 Onpe/Ie/IeHHe pa3sMepos 2JI€CM€HTADHOH 4€HKH Pa3MepbI 2JI€M€HTADHOI suelKH a, b, Cc DOMÔHH€CKHX KDHCTAJUIOB OIID€/I€.J1/IH C ùCIO/Ib3OBAHH€M (bODMV.I:
Vd = h⁄4 + R⁄Bˆ + Ứ/c (3.5) rye h, k, nủHneKCbI MH.1/Iepa kpuctamiorpaduyeckux H/IOCKOCT€II.
YTOUHeEHHe 3HAYCHHH pa3MepoB 23JI€M€HTADHOÍ #q€fKH HIPOBOHHJIH CcHCIIOJIb3OBAHH€M KOMIIbIOTepHOH MporpamMpbl CELREF [89] Ha 2roro BIPOIDAaMMY BBOJHIIH 3Ha4eHHA W3MepeHHbIX 20 W pa3Mepbl WIeMeHTapHO qeliKH, Ha eHHble Ha IICDBOM 2TaII€ B FDYỉOM IDHỐJIH€HHH.
2.3.3 Onpedesenne 0DH€HTAHHH KDHCTA1I0TDA(}HH€CKHX 0C€H B KDHCTALJI€
OpH€HTaIlWtO KDHCTAJUIOFpadWuecKHX ocet a, b H Cc B W3y4aeMbIx MOHOKDHCTAJILIAX HDOBO/HH/IIH HYT€M aHasM3a IHÙDAKTOTDAMM, CHATBIX C HX TpaH€li B reoMeTpHH ỉ - 2ỉ B dTOM C/IYda€ MIpOABJIAIOTCA TOJIbKO D€(JI€KCBI OT KDHCTA/ILIOTpaMH€CKHX IJIOCKOCTeH, IHADpđ/LI€JIbHBIX ĐHCCJI€HY€MOI TDAHH, HalneHHB€ aHHble O WwHIeKcax MH.JLI€CpDa TpAaHH H ator HHODMAHHSO O ODH€HTaIIHH KDHCT4J1IOTpa(WweCKHWX OC€lÍ B KDHCT8.1I€.
2.4 TepMoTpaBHMe€TDpHWe€CKHH AHA.J1m3 (TTA) 9TO M€TOI T€DMHU€CKOIO H4JIH3A, C HOMOIIEO KOTODOTO MBI D€THCTDHDOB4.IH TÊMIICDATYDHBI€ 34BHCHMOCTH T€IIJIOBBI€/I€HH4 (KpuBasd JITA) u
Ste Mie Mie Mae! Bl es Whee Mie
H3M€H€HH1 Maccbl Õpa3Ha (KpHBad TI’) ƯTOT M€TOJI sABJIAeTCA OCOƠ€HHO 2(€KTHBHBIM B TeX CJIYdAãX, KOT/Ia OOpa3ell BBIJI€JIIGT HIM TIOTJIOIHIA€T T€IIJIOTY B pe3yJIbTare TeX HJIH HHBIX (ÙH3HHCCKHX H XHMHHCCKHX IIDOHCCCOB WJM ra3000pa3Hble KOMIIOH€HTBI IDH H3M€H€HHH TÊMIICDATYPHI.
T€pMOTDABHM€TPHuCCKHC HCCJICHOBAHH4 BBIIOJIHCHB = C HOMOHIbEO jepuBatorpada Q1500 D cucrempr F Paulik, J Paulic, L Erdey JIna HI€HTHÙHMKAHIWH IIDOICCCOB, DCTHCTDHDY€MBIX B BHJI€ HHKOB Ha KDHBBIX 1W(€p€HIWHaJbHO-T€DMHu€CKOFTO aHa1n3a (JITA), HpOBOHHIACb Cb€MKA 7HDAKTOTDPAMM ÕPA3IIOB, 3AKAJICHHbIX C T€MIICDATYP, ¡I€KAIHIHX HH3K€ H BBIII COOTBCTCTBCHHO TeMIIepaTypbl paccMaTpHBaemoro IpoHnecca lẽĨpH 23TOM VHHTBIB8JIHCb TakoKe JaHHble OO W3M€H€HHH Macchi OOpa3ila, PUKCHpyeMble Ha KDHBBIX T€DMOTDpaBHM€TpHH TI uv 1n{(bepeHIIwa/IbEHoli TeDMOTpaBnMeTpmu JITT.
2.55 Wcc.Ie10BaHHs 2JI€KTDHH€CKHX CBOHCTB J]ẽJ HCCJIEIOBAHHH T€MII€DATYDPHOI 33BHCHMOCTH IIDOBOJIHMOCTH KDHCTA/LIOB Ha MOCTOAHHOM TOK€ HCIIOJIb3OBAJIC# CT€HJI, OJIOK-CXeMa KOTODOTO MOKa3aHa Ha DHC.
2.7 OOpa3ell IIDH3KHMđ/IC# K XOJIOMHOMY KOHIIY T€DMOIIaDBI Au-Au:Fe, € IOMOIIbIO KOTODOI T€MII€DATYDA H3M€P4LIACb c TOHHOCTbEO 0,1 K, B H3M€DHT€JIbBHOl KaMepe (puc 2.8) KDHOCTaTa-BCTaBKH B TDAHCTIIODTHHIẽÍ T€JIN€BHIlÍ 7IOAD.
SalaBaeMoe HaIIDIKCHH€ IIHTAHHT IIDHKJIAHBIBAIH K IIOCJIEHIOBAT€JIbHO COCJIMHCHHBIM OOpa3lly H HATDY3OHHOMV COIIDOTHB/I€HHWIO 5,26 KOM HaIIps›KeHWe Ha 9TOM CONMPOTHBJIEHHH D€THCTDOBAJIH BOJIbMeTpoM III-300 c qyBCTBHT€JIbHOCTbIO | MKB llpH #3M€peHWW Ha HW3KOlÍ YacToTe (1ops1ka 10 Ii) uctosmb30BamM Lock in amplifier, H C MOMOLIbIO CHHXpOHHOrO JIeTeKTHPOBaHHA VBCTBHT€JIbHOCTb MO3KHO ỐbIIo nonHaTb 1o 10° B Takum oGpa30M, I€JIGIIbHYIO BeIMYHHY COMpOTHBJICHHA OỐPa3HA MO3KHO ỐbLIO W3MepsTb Ha ypoBHe no 10'-10”” Om Jia nomyuenua
OMHH€CKHX KOHTAKTOB K OOpa3ily HCIO/Ib3OBđJIH HH/IHÍ-TA/IH€BVIO IACTY, KOTODVIO MO3KHO ÔBbIJIO JIerKO HaHeCTH Ha COOTB€TCTBVIOIIH€ TDAHH, a 34T€M V/IAJIHTb, He
PucyHoy 2.7 Cxema JIA HCC/I€IOBAHHÍ 3JI€KTpO(ÙH3W€CKHX CBOèẽCTB OÔpa3HnoB, R¿ H Cy — COIDOTHB/ICHH€ HU EMKOCTb KDHCTA11L1A, C, — EMKOCTB H3MKDHT€/IbHOl qefKH, R,, C;, — COIDOTHBJI€HH€ HaTDY3KH H CyMMapHad
€MKOCTb IDOBO/IOB H3M€DHT€JIbHbIX IDHỉODOB.
B 23/I€KTPpHHCCKOI Welw ỐBILIH HOCJIGHOBATGJIbHO CO€HHHCHBI HCTOHHHKH IIOCTOWHHOTO U, 4 I€D€M€HHOTO HaIDZK€HHÙ U, , HAaFDY3ONHO€ COIDOTHBJI€HHe RK, H WCCIJIYCMHI OễDpa3eH pu /HCKDCTHOM HaOope HalipsằKeHHH WCTOHHHKaA noctosHHoro ToKa (0 < U, < 250 B) u đúKcHpOBAHHOÍ aMIIIHTY€ HWCTOHHHKaA
IIepeMeHHoro Toka (1.74.10° Tu, U, = 100 MB) OHOBDeM€HHO H3M€DZUIHCb Ha
Harpy304HOM COIDOTHBJI€HHH (R, = 5,26 KOM) HallpsằKeHHe MOCTOAHHOrO TOKaA HWH(DPOBBIM BOJIBTMeTPpOM, a HAIDSKCHHC WepeMeHHOrO TOKa IIOJIIDH3AHMH (CJIBHHYVTOTO HO (3€ B KBA/IDATYD€) CHHXDOHHBIM JI€T€KTODOM ẽẽoCJIeIHW€ OBI HCIIOJIb3OB8HBI JIA pacueTa CTATHH€CKOTO YVJI€JIbHOTO COIIDOTHBJI€HH1 ÐO (MIM VJI€JIbHOèÍ IIDOBO/JIWMOCTH ỉ) W JW2JI€KTDHH€CKOèI IDOHHIIA€MOCTH OỐP43HOB Ê IIDH pa3HbIx T€MIICDATYDAX, HCXO/UI H3 34KOHa Oma JIA IOJIHOFO TOKAa 33MKHYTỌH Lenn.
B H€KOTOPBIX CJIYHAãX MBI HCIIOJIB3OBđJIH JDYTYIO 8HAJIOTHHHYIO YCTAHOBKYV
JIA H3M€D€HH1 IIDOBO/HMOCTH KDHCTA/JIJIOB Ha IOCTOHHOM H II€DGM€HHOM TOKC€,
KOTOpad ÕOJIe€ yOOHO YIIDABJ1/IACb C IOMOHIbIO IDOTpaMMBI Labview (puc 2.9).
PucyHok 2.8 Hu3koTemmepatypHas ọqelfiKa Cc JI€D3KaT€JI€M OOpa3ila 715 H3M€D€HH1 2JI€KTDHH€CKHX CBOIÍCTB: | — ÕDa3€H, 2 — IDH3KHMHBI€ KOHTAKTBI C HCIIOJIb3OBAHH€M In-Ga 2BT€KTHKH , 3 — JI€D?KAT€/IH 7J11 IDH3KHMa OOpa3ila H
KOHTAKTOB, 4 — T€DMOIaPpa Au-Au:Fe € OIODHBIM CIIA€M, 5 — I€dKa, 6 —
KOHTAKTHBI€ IIDOBO/Ja 7/1 H3M€DHT€/IbEHBIX IDHÔODOB.
3HaH€HM1 HaIIDZ2KCHHI HCTONHHKđ H Hà Harpy3Ke OJIHOBD©M€HO W3M€D€HBI BOJIbBTM€TpOM B7-78/1 c 10 KaHaIaMH w3MepeHH4 (pwc 2.9a) 3HaqeHne DTC padouero clad T€DMOIIADBI, KaCAIOII€TOC# OOpa3ila, OTHOCHT€/IbHO HAIIDS2K€HIO
OIIOPHOTO CHIA, OIYHIHHOFO B TepMoce co JIbIOM Hpn O°C H3M€pSICS
BOJIBTMeTPOM B7-78 Takuve 3Ha4eHHA BBOJHHJIHCb B KOMIIOT€D€ C IIOMOIIbEO IDOTDaMMBI, HaIHCaHHOI Ha LabView lĨpH 3TOM 3Haq€HH€ COIIDOTHBJI€HH1S oOpa3ila ABTOMATHYECKH DAaCCHHTBIBAJIOCb HO (ÙÌODMV.I€:
(3.6) roe Uy H Ry — HallpsKeHve H COMpOTHBJIeHHe HATDY3KH, U,, — HaAIID2KCHH€
HCTOHHMKA 3Haq4€HW€ T€MII€DATYDBI OIID€JH€.1LIOCb IIYT€M CpaBHeHHsA 3HAYeCHHAH3M€peHHoI 2C c TaÕ/IHHHBIMH 3HAH4€HHSMH JIA T€DMOHIADBL Au-Au:Fe.
PucyHok 2.9 CxeMa 7/11 H3M€D€HH4 2JI€KTDHd€CKHX CBOHCTB ÕDA3HOB Ha IOCTOSHHOM (a) H II€DGM€HHOM (6) Toke: | — OoỐpa3eHn; 2 — Au-Au:Fe Tepmoriapa c
OIIODHBIM CIIA€M B TEPMOCE C TAIOIHHM JIbIOM 3; 4 4 8 — BOJIbTM€TPp B7-78; 5 — KOMIIBIOT€P; 6 - COIDOTHB/ICHH€ HATDY3KH; — HCTOHHWK IIOCTOSHHOTO
HaIID4?K€HHM1, 9 —W3M€DHT€./Ib HMI€/aHca E7-20.
YjlebHad IDOBO/JIHMOCTb ếDA3IIOB OIID€/JI€/I1€TCọ HO ODMV.LIG:
—ẹ,ẨŠ Ơ (3.7) re o — YJI€/IbHA5 IIDOBO/IHMOCTb, / H S — 7JIHHA H IIOID€HHa41 IIJIOII3/1b OOpasiloB.
WMIIe1aHC H3M€D1IC1 C IOMOHIbBEO MOcTa E7-20 Ha JIHCKP€THBIX HACTOTAX B 1Wana3one (0), 1-100 k[ 1 ẽIpHHIINTHA/IbHAđ1 cxema JIA STOTO H3M€D€HH1 IIOKA3AHa Ha pwc 2.96 3HaqeHwe 2C TepMOHADBI, OIODHHIl chai KOTOPOH OIYHI€H B cTakaH /JIbJA, H3M€DSUJICI BOJIbTM€TpOM B7-78 Bce 3Haq€eHH1 BBOJHHJIHCb B KOMIIIOT€D qepe3 IporpaMMY LabView.
2.6 Mcc.IeTI0BAHHS MATHHTHBIX CBOHCTB Wl3MepeHws TeMIIeDaTYDHOlÍ 34BHCHMOCTH HaMaTHwWueHHOCTH MT) B oð/1acTH 5
— 300 K BbBIIO/IH1IH TaKK€e Ha SQUID MarHnTroMeTrpe MPMS-XL-7 or Quantum Design Inc B c/aỉOM MaTHHTHOM Tose (H = 20 Đ) B pexumax ZFC (zero- field-cooled
— OXJIa?K€e-HWe 6e3 IO.11) w FC (field-cooled — ox21a3K7I€HW€ B IIO.I€).
2KHIKOCTE - 2K 1200
1020°Ca_ LiyCuO; aS (Cu Li Jo |f 1000
Li›CuO2+:LiCuzO;_ j2 | L1Cu¿©3* | soo LixCuO 7+! LiCu303 | (Cu, L1,)O
50 60 70 80 90 100 Li,CuO, mol % CuO CuOz
PucyHok 3.7 ®a3oBas JJMarpamMa cucTeMBbI LlạO-CuO, B IDHCYTCTBHH
IIo 1aHHBM PDA uw TIA CHHT€3HDOBAHHBIX B BO3/IVYIIHOI aTMOC(€pe OÔPA3HOB CHCTeMbI Pa3HbIX COCTABOB ÔblJIa IOCTDO€Ha ee (43O0BaA1 /HarDaMMa (puc 3.7) B cucteMe ÕDPa3YyIOTC1 /IBA IDOM€?KYTOHHBIX CO€NWH€HHMX: LICu¿O; u LiCu303, oOacTH TepMHYeCKOH CTaÕH/IbHOCTH KOTODBIX OFDAHHH€HBI Kak CB€DXY (TeMneparypaMH 1323 w 1373 K cooTBeTcTBeHHO) Tak H CHH3Y (1163 w 1113 K COOTB€TCTB€HHO) lẽDH CDaBHHT€JIbHO M€/IJICHHOM OX/JIA3KJI€HHW OỐDA3HOB (a3 OT T©MII€DATYDHBIX OÔ/IaCT€l CTAaÔOHJIbHOCTH (a3 HO KOMHATHOÍ T€MI€DATYDBI IPOWCXO/THMT pacna7 daz ©JIHOKO IPH 3aKaJIHBaHHH OÔpa3IOB a3 oT 1173 - 1323 K HO KOMHATHOÌI T€MI€DATYDBI (43bI COXDAHSIOTCI HW MOTYT H€OIID€H€/I€CHHO
7IOJITO CYIHICCTBOBA/IO IPH HODMđ/IbHBIX YCJIOBH4X.
JlepHBaTrorpawwa Li(Cu,Zn);O;, 5 atT.% Zn IOIOÔHa ONMCaHHOH BBIIIe 1€pHBaTOTpaAMM€ LiCu,O,; H3 n€pHBaTorpaMMBI LI(CusozZnoos)aO; (puc 3.8) CJI€IY€T, HTO BB€I€HH€ B LiCu,O, 5 aTOMHOTO IOH€HTa Zn CYIHI€CTB€HHO He H3M€HS€T T€DMHH€CKOTO IIOB€I€HH41 2TOlÍ (ba3BI Fẽ3 n€epHBaToTpaMMBI uv POA
OIID€/I€JICHHBI CJI€JIYIOHIH€ D€AaKIHH H UX T€MIICDATYDHI:
PucyHok 3.8 JlepuBaTorpaMMa H3M€JIbW€HHBIX B IODOIIOK KPHCTAaJIIOB LI(Zno 9sCug 95)202: HarpeB CO CKODOCTBIO 7,5 TDA//MHH, HCXO/IHA1 Macca Ooỉpa3na 788,0 MT, HCC/I€JIYCMOC UH 3T3JIOHHO€ B€II€CTBO (IIPOKAJICHHbIM IDH
Li,(Cu,Zn)O, + CuO (1087 K) + O; > Li(Cu,Zn);O; + Liz(Cu,Zn)O; (1176 K) +
= T 30 MA VU mi ala and ge 0222 < 00 ote ila
PucyHok 3.9 €DMOTDaMMBI IODOIIKa MOHOKDHCT4J1IOB LiCuzO,,
IIOJIYH€HHBI€ B APrOHOBOK arMocepe (DTA — KpHBas 71(€D€HIIHAJIbBHOTO T€DMWHH€CKOTO H8/IH3a, 7 — Macca ÕDa3Ha, 7 —
TeMIlepatypa, ƒ — BpeMA) XapakTepHble T€MIICDATYDBI yKa3aHbl Ha
3.2.2 TepMorpaBuMerpnueckne HCCJI€I0BAaHH1W LiCu,O, B armMocdepe aprona llpw HarpeBec LiCu,O, B atmMocdepe aproHa (a3a coxpaHserca T€DMHM€CKVIO YCTOHYUBOCTS BIIJIOTb LO TEMMepatypbI HJ1ABJIeHw4 (oKoJlo 1320 K).
Ha kpwnBol JITA pu HarpeBe pu 7p; = 993 K Haỉế›I!O/aeTcd YeTKHH HHK, HIDH 2TOM Macca OOpa3ila He H3MeHsHeTCA (puc 3.9) TH /IAHHBI€ CBHJI€T€JIbCTBVIOT O TOM, HTO IDH ykKa3aHHOW Temiepatype IDOHCXOJIHT (a3OBỌ IIeDexoH I€pBOTO pona llpwH ox1aneHHH Ha KpuBok DTA npu 7 = 983 K _ Hadsmoyaetca 9K3OTEPMHYeCKHH THK, VKA3BbIBAIOIHHÍ Ha OOpaTHMOcTb (23OBOTO II€D€XOJA.
HaGỉmtoủnaeMB€ muKH H*XFAÁ XOPOIHIO BOCIDOH3BOHSTCI HDH HOBTODHBIX
3.3 Penrrenoda30Bbiii H DCHTT€HOCICKTDA2IbSHBIH AHAJIN3bI 0ỐDA3H0B
3.3.1 Pentrenoda30Bbii AaH4U1H3 [ẽDHHa/IGKHOCTb BBIDAII€HHBIX KDHCTA/LIOB K daze LiCu,O, IIOJITB€DXKI€Ha D€HTT€HOTpaWuecKHMH WCCJI€IOBAaHHSMH P€HTT€HOTDAaMMAđ IIODOIHIKA HO/IYH€HHBIX KDHCT8/LIOB WHHHIHDYCTCI Ha OCHOBe pOMOnMYeCKOH 2JICM€HTADHOIẽ ứqelKH C
18HHbIMH [52—54, 84] no KpHCTa/LINdecKOl crpyKType LICu¿O¿ Kpome yKa3aHHol (ba3bI B 34KDHCTAJ1IH3OBAHHOM paciiiaBe 3a(ÙHKCHDOBAHO IIDHCYTCTBHe IOD3STKa 5% cba3 LiCu3O3 u CuO.
KOHTpOJIb 3a HA/IHNHHCM J[BOMHUKOBaHHA KPHCTA3JUIOB IIPOBOHHJIH IIYTCM
| mm i a LiCu,O, (00/) powder LiCu,O od et “
Puc 3.10 JudpaktTorpamMMbl, CHATbIC C H3M€JIbH€HHBIX B IODOIIOK
IIIACTHHHATEBIX MOHOKDHCTAJ1JIOB H C MOBEPXHOCTH IIJIACTHHHATOTO KDHCT3JL1A B reoMeTpmun 0-20.
C2)§olf:kinlCa431iMevALvpc 19-Feb-2074 1626093, 5: Hung Pe ae uA/HẾU 2 đBuuSw ALVun
AgL Ì unk por ` FE SR cài aT = = ry NGON (mT TTT]
0.00 8.00 16.00 24.00 oe Cnergy-keV _—————DD,Ụ oo ae Ce ee ẾN là
Puc 3.11 Pesy.Ibrarbi PCDA kpuctamioB (L1i.„Ag„)Cu¿O; (a) w Li(Cuy.Znx)20%
CbeMKH C HX IIOB€DXHOCTCÌI, ODH€CHTHDOBAHHBIX BHO.Ib WIOcKocTeH (400) u (020), 7W(DAKTOTDaMM B reoMeTpHH 8-20 (cM IIYHKT 3.3.1).
PesyIbTrarH P@MA IOHYKTOB KDHCTAJUIH3A4HWH c nÕaBKaMH ZnO VKA3BIBAIOT Ha TO, HTO H3 JIBYX HD€/IIOJIATA€MBIX BapHaeTOB BXO3KJI€HHS Zn pemerky LICu¿O; — (LI,Zn)Cu›Os, LI(Cu,Zn)O›; pea/IH3y€TCọ1 BTODOIèÍ BADHAHT.
Tak Kak Zn He BXO/IHT B 33M€THBIX KOJIIH€CTBAX B Li IIOJD€II€TKY, COCTAB HIHXTBI (Li,Zn)Cu,0, cMeIlIaerc1 B cTopoHy CuO, BC/ICICTBW€E qerO IID€OG.1a/aloHteli (a3OlÍ B 3aCTbIBIIHX DaCI.IaBaxX TaKWX cMecel Oba LiCu3QO3.
3.3.2 XHMHW€CKHH COCTAB 3.3.2.1 P€HTT€HOCIE€KTD4JIbSHbIH (ÙJIYOD€CH€HTHBIH aHaJIn3 [ẽOCKOUIEKY YBCTBHT€JIEHOCTb 3H3JIH3ATODA He IIO3BO¿I4JIA (èHKCHDOBATb JI€TKH€G 2JI€M€HTBIL Li wu O, TO HDOBOHH/IOCb OIID€I€JICHH€C OTHOCHT€G/IbHOTO COJI€D3KaHH5 cepeOpa IIO OTHOIHI€HHIO K BC€MY CO/JI€D3KAaHHIO M€GJIH P€3V/IbTATBI aHAJIH3OB ID€/CTABJI€HbI Ha pHC 3.11 BHHO, WTO CO/I€DKAHH€ aTOMOB Ag B KDHCTAJ1IAX, HOJIYd€HHBIX H3 IIWXTBI LiạCO;-4(1-x)CuO-4xAgNO¿, yBe/IuqwBaeTcs HO 4 aTr.⁄9 € DOCTOM B HIHXT€ COI€DKaHH1 Ag 1O x = 0,25 /|aIbHefiee VBCJINHHCHHC COJICDP?KAHHZ1 ATOMOB cepedpa B HIHXTC He BbI3bIBACT YBCJINHNCHHZ HX
OIID€J€JI€HHO€ CO/I€DXKAHH€ Zn B KPDHCTAJLIAX, IIOJIYH€HHBIX H3 HIHXTBI LiạCO›-4(1-x)CuO 4xZnO c x = 0,10 cocTaBjdeTr 12 ar.% (HO OTHOIICHHED K CO/I€D?KAHHIO ATOMOB M€JTW).
TakuM oOpa30M, /IaHHBI€E PDA wu PC(CĐA HO3BOJHIOT 3AKJIOHHTb, HTO B B KpHCTaJ1IbBI LiCu,O, Moxer BH€7DọTCọ 1O 4 ar % Ag u Wo 12 ar % Zn Ha ocHoBe KDHCTAJIIOXHMHH€CKOITO aHA/IH33 CJ€/IAHO 3AKJIOH€HH€ OO OOpa30BaHHH TB€D/JBIX pacrBopop (LI¡„Ag,)Cu¿O› w LI(Cui„Zn/,);O¿ c 0 < x < 0,05 H 0 < x < 0,12
3.3.2.2 Jjẽa3epHbIl MaAcC—CHI€KTDOM€TDHH€CKHH AHA.IH3
Taosmnita 3.2 Pe3y.IbTraTrbIi JIMCOA aHa/In3a KpHCT4.110B LICu¿O; (oOpa3er A).
3JIe€M€HT | % MACCOBBIe % aTOMHBIe 7 AT., pACH€T HX XHM.
Al 0,0129 0,0154Na 0,0032 0,0045Ca 0,0043 0,0034K 0.0017 0,0014Mg 0,0008 0,0011Si 0,0009 0,0010S 0,0010 0,0010Cl 0,0007 0,0007Fe 0,0010 0,0006Cr 0,0005 0,0003Mn 0,0005 0,0003B 0.0001 0,0002P 0.0002 0.0002
TaG@nna 3.3 Pe3yJibrarbI JIMC2A aHa/In3a KpncTraJ11oB LiCu,O, (odpaser B).
3 IeMe€eHT | % MaCCOBbie % 2TOMHbI© % aT., DACH€T HX XHM.
AI 0.0129 0.0154 Na 0.0032 0.0045 Ca 0.0043 0.0034 K 0.0017 0.0014 Mg 0,0008 0,0011 Si 0,0009 0,0010 S 0.0010 0.0010 Cl 0,0007 0,0007 Fe 0,0010 0,0006 Cr 0,0005 0,0003 Mn 0,0005 0,0003 B 0,0001 0,0002 P 0.0002 0.0002
P€3y/IbTaTBI /JIA3€DHOTO MACC-CIIEKTDOM€TPHu€CKOTO aHaJ1w3a (JIMC2A) IIOKA3bIBAIOT, WTO OTHOIHICHHG aTOMHBIX KOHI€HTpanHli [Cu]/[Li] oT1ndajocb oT CTCXHOM€TDMMCCKOTO 3HA4€HH1 2 B TD€TbBCM-HCTBCDIOM 3HaKe MAHTHCCHI, a oTrHoIieHwe |O]/[LI] cocraB.14/1O 2,2 — 2,3 = 2 + 6 JIA NGIIO/Ib3V€MBIX HAMM ÕPDA3IIOB H3 JIBYX D43HBIX CHHT€3OB(CM Tabs 3.2 w 3.3) MO3KHO IIDJIIIOJIO?KHTb, HTO /I3HHBI€
3HayeHHA ở = (0,2 - 0,3 COOTB€TCTBVIOT H30bITOUHOMY KHCJIODONV Os, KOTODHII, aHa/iorwuHo BTCII daze Tuna 123 [91], Mower 32HWMaTb BAKAHTHBI€ OKTA2/IDWd€CKH€
IIO3HIWW B IWIOCKOCTAX O/IHOBAJI€CHTHOl Me [92| Wcxo/gI H3 cKa3aHHOTO MO?KHO IID€/JIIIOJIO?KHTb,, TO C?KATH€ B/IOJIb OCH C CBA3AHO € YqAaCTH€M Os.
Hajndwe IpwMeCCèẽ aTOMOB Al MOKHO OOBACHHTb, BXO3KI€HHCM UX B
COCTAB KPHCTAJLIA pH ero BBIDAHIHBAHHH H3 MaTepHasia ĐHCIOJIb3Y€MOTO atyHOBOrO THI/I1 CO/I€P3KAHH1 IDHM€C€H /IDYVTHX 3JICM€HTOB B IIDHM€DHO Ha
3.3.3 3aBHCHMOCTb DA3M€DOB 2JI€M€HTADHOIÍ A4eHKH OT COCTABO0B Ag H Zn 32KDHCTA/LIH3OBAHHBX CJIHTKOB OHID€H€GIHIUIH M€TOHOM PMA c HCIIOJIb3OBAHH€M aBTOMATH3WDOBAHHOTO D€HTT€HOBCKOTO /Iw(paKToMeTpa JIPOH- 4 (CuK, — w3jydeHHe) YCTaHOBJI€HO, 4TO /JIHDAKTOTDAMMBI HOJIYH€HHBIX KDHCT8/ILIOB TO IIO/IO3K€HHIO WH OTHOCHT€JIbBHbIM HHT€HCHBHOCTSM ped)JIeKCOB IIOTOÔHBI 1aHHBIM [56] Io KpHcTra/1IaAM LICu›Os.
Ilo pe3yIbTaTaM W3M€peHHli 1o.1o›KeHnl ped.1eKcos (204), (006), (210), (008), (108), (400), (216), (200) u (004), (006) c ncIoO/IE3OBAHH€M KOMIIBIOTeDHOI IporpaMMbI CELREF OIp€JI€/I€HbBI IaDaM€TPBI a, b, c DOMƠWwu€cKỌÍ 2/ICM€HTADHOIÍ qH€ẽKH KDHCTAJILIOB HW IIOCTDO€HbI 34BHCHMOCTH 2THX IADAM€TDOB OT COCTABA HCXOHTHỌÍ IIWXTBI (pwc 3.12) Pocr B HIHXT€ COJI€DKAHH4 Ag BBI3bIBA€T /IHH€ÍHBI€ yBeJIM4eHHA IADAM€TDOB @ H C 3/I€M€HTADHOI sãd€liKH, IIapaMeTp b HPH 23TOM IIDAKTHu€CKH He MeHAeTCH, 2TH VB€IHH€HH1A HaCbIHAaIOTCI HpH x = 0,25.
JabHeliliee yBe/IiqeHWe€ cOJI€D3KaHH1 cepeOpa B IINXT€ Bblle x = 0,25 He BEI3bIBA€T 33M€THBIX ù3M€H€HHl II4DAM€TPOB 3JI€M€HTADHOl qefKH.
OTH WaHHble, a TAK?K€ IIDHB€J€HHBI€ BBIHI© /I3HHbI€ DGHTT€HOCII€KTDAJIbHOTO QH8JIH3a, MO3BOJIAIOT 3aKJIKOUHTb, HTO B DâCCMATDHBA€MOI CHCT€M€ OOpa3yIOTCA TB€P/IBIC DACTBODBI C BH€JIDCHH€M B KDHCTAJLIWd€CKVIO crpyKtTypy LiCu,O, no 4 aT.% Ag IIO OTHOHI€HHIO K CO/I€D?KAHHIO ATOMOB M€JIH.
YunTbIBad COOTHOHICHH€ HOHHBIX DAMYCOB KaTHOHOB JIMTHA, M€GIH H cepeOpa [93] (cM Tad 3.4), BJIH1HHG Ha ÕDA3OBAHH€ TB€DJHIBIX DACTBODOB (bakTopa B4JI€HTHOCTH HW aHHble OO VB€JIHH€HH€ IIADAM€TDPOB 23/I€M€HTADHOÌ qH€èẽKH KDHCTAJUIOB C BH€IDCHHCM B HHX CepeOpa, MO3HO 34KJIIOHHTb, YTO
HaH6O/I€€ B€DOSTHBbIM CIOCOOOM BH€/ID€HH4 CepeOpa B KDHCTA/LINq€CKYIO D€II€TKY
LuCu,O, sByIseTCA 3âM€II€HH€ B H€TBIDEXYTO/IbHbIX HHDAMH/IAX KaTHOHOB Li’ H Cu” na Ag’ B stom C/Iyda© BGJIHHHHA OTHOCHT€JIbHOTO DOCTA Mapametpa €
2/I€M€HTADpHOW ãdefKH (Ac/cAx ~20%) Kaq€CTB€HHO COOTBETCTByeT B€/IHHHHAM
Ip€BbIIIeHus HOHHOTO pannyca Ag” nan Li’ uv Cu” (cm TaÕn 3.4) llpw stom
KOMITCHCaHHA 2/ICKTDHHCCKOTO 34DZHA, BO5HHKAIOIHCTO IHIDH HCH3OBaJICHTHbIX
Bemmunubl 2Q€KTHBHbIX HOHHBIX Dâ/IMYCOB KaTHOHOB Li’, CuTM uv AgTM, n= 1,2
H 3 WIA pa3HbIxX KOODIWHAHWOHHBIX ducer (K.d.) HO [93] H BGIHHHHBI OTHOCHTEJIBHBIX DA3JINHHÌ MexKyY HOHHbIMH Da/IWYCaMH cepeOpa H JIMTHA, M€JH
A = [r(Ag”-r(C”"5(C”Đ,n, m = 1, 2, 3 (B CKÕKaX ÿ CHMBO/IOB KATHOHOB yka3aHa UX 2/I€KTDOHHA% KOHHTYDAHM4, * - HOHHBIe Da/HHYCbI JIA K.H, =5 BbIHHWCJI€HbI Kak CD€/JIHH€ Wid K.4 = 4 H K.d =6, SQ — H/IAHADHO-KBA/IDATHa1 KOH(MTYpaIw3).
C”"=Li 0,34 0,28 0,24 Cu 0,32 0,26 0,22 Cu" 0,39 0,33 0,29 Cu” 0.74 A(Ag”-C"
3aMeLleHwusx Ag’ —> Li’, BO3MO3XHA 3a CUT BH€/JID€HH% ATOMOB 2KCTpA-KHCJIODO/A O;” B OMMCaHHbIe BBII BAKAHTHbI€ IO3HHMH cJloeB 1) Cu’ Kpuctamimueckoli pemetku B utore dopmyJy OỐPA3VIOIIHXCWH TB€DHBIX PaCTBOPOB MO3KHO
IID€JICTaBHTb B BHJE: (Li },Ag~ ,)Cu (Cu ).,Ag?",)O” a4.
B cjyda€ IIMXTbI C IHHKOM DOCT COJI€DX@AHH1 ZN BbI3BbIBA€T JINH€HHBICVB€JIWH€HH11 IIaDaM€TDOB a, b H € 2ICM€HTADHỌè ọeliKH B OƠ.1acTn x = 0 - 0,12, ùipw
PncyHok 3.12 3aBHCHMOCTb pa3MepoB DOMỉWW€CKỌ 2/ICM€HTADHỌÍ A4eHKU KPHCTaJWIOB, BbIDAII€HHBIX W3 IIWXTBI Li(Cu, Ag,)202, OT COCTaBa IIHXTHI. ô 2036 „ể
PncyHok 3.13 3aBWCWHMOCTb pa3Mepos 4, b, c 1 OObeMa V poMỉnwwecKoll JIEMCHTAPHOH q€eliKH KPHCTAJWIOB TB€D/IBIX DACTBODOB Ha OcHOBe LICuaO›
OT 3a,aBaeMOH B IIHXT€ KOHI€HTpaHwMn Li(Cuy Zn,)Or. x > 0,12 pa3M€pbI 3/I€M€HTADHOI #q€lfKH IIDAKTHH€CKH He 3aBHCAT OT COCTABAIUMXTBI (pwc 3.13).
3.3.4 3aBHCMOCTb DA3MẠDO0B 2JIẠMẠHTADHOH A4eHKH OT TÊDMO0ốDAđử0TKH Hamu bIJIO VCTAHOBJICHO, HTO B ÕP43IHAX KHCJIODO/JIHA" HeTeXHOMeTPHA IIDOSBJIICTCH B BUAe H3ÕbITOHHOTO KHCJIODO/lA Os, yBesIMYeHHe KOHIICHTDAHHH KOTODOTO HM€€T T€H/I€HIIHIO C?KHMọTb OOBEM 2JI€M€HTADHOl #qeliKH WH OCế€HHO 3AM€THO VM€HPIIATb D€IICTOHHYIO KOHCTAHTY c (CHTYAHHH, HaJIOTHHHậ CceM€lcTBY kKynparop 123 [91]) CormacHo TepMWdecKOMV aHanH3y [79], IDOB€GJI€CHHOMY B HOPMA@JIbHbIX TMOC€PHBIX YCJIOBHAX MPH IHADHHAIbHOM 1aBJIeHnn p(O2) = 0,21 arm, B PP M€TO/I€ KOHII€HTDaHM4S Os 3aBHCHT OT BbIOOpa T€MII€DATYDBI 3aKaJIKH ếDA3HOB B TeMIepaTypHOH 3OH€ YCTOèẽHHBOCTH (a3bI H OKDV?KalOIIelf ra3oBol arMocQep Ha pwc 3.14 aa IpDHM€pậ ID€HCTAB/ICHBI
D€HTT€HOCTDYKTYDHBI€ /IAHHBI€ 3ABHCHMOCTH Õb€MaA 2JICM€HTADHOIl sãqeliKH V
(Á*) H KOHCTAHTBI € (Á) OT BbIOOpa T€MIICDATYDBI 38Kâ/IKH, IO/JIYH€HHBI€ [VIA
OIHOTO W3 PP oOpa3lloB CJI€JIVEOIIHM M€TO/IOM: lĨOCJI€ IOCTH3K€HH5 DABHOB€CHS
"âu _—RR_1 °“RR_2 S| suy nạ 3
1 ý linear fit ; F 203,08 12,411 - O a RRARR2 OZP xx J 203,04 oo 203,00
Pncynok 3.14 Bauanve M€TOJIOB CHHT€33 HH KOHIICHTDAIHMH 2KCTpA-KHC./IODpO/IaOs Ha KDHCT8.17IOXHMHN€CKH€ IIaDaM€TDBI 2JI€M€HTaDHỌl qefKn LICu¿O¿.
Taosmita 3.5 3Haq€HH1 KOHCTaHTa c OỐPA3HOB JO WH HOCJIIC omkura, (crys_) — W3MepeHHsA Ha MOHOKDHCTAJLI3X, a 6e3 (crys) — H3M€P€HH1 Ha
H3M€/Ib€HHbIX IODOIIOK KDHCTA11L1AX.
O6pasen JẽO OT2KHTra Iloc;Ie oTKura
WHHT€HCHBHOCTE, | 0 IMI 10
emu/mole c
Pncynok 3.19 TeMIIeDaTYDHa4 3aBHCHMOCTb HaMaTHHdeHHocTrn LICu¿O; (a)
(H | c, Hpc= 10 3: KpuBas (1) cooTBetcTByeT pexumy FC; kpuBag (2) COOTB€TCTBV€T pexUuMy ZFC, H | b Hpc= 10 3: kpusas (3) COOTB€TCTBY€T pexumy ZFC; KpHBa# (4) cOOTB€TCTBV€T pexumy FC.) H CIOHTAHHOFTO MâTHHTHOTO MOMeHTAa Mey = Mec - Ä⁄zrc (60) B C/IaÕOM Hose JIA
LICuzOs;s HOBOHM MaTHHTHOl (a3bI CO CBỌCTBAMH CJIaỉOTO (b€DDOMATH€TH3Ma (puc 3.18) c ODH€HTaHW€Ì MATHHTHOTO MOM€HTA B/IOJIb OCH C 2TOT OTKJIHK OÔ/1a1A€T TÊMIIEDATYDHBIM H HOJI€BBIM THCT€D€3HCOM C DOCTOM CO/I€D3KaHH1 Os YVBCJINHHBACTC4Z BCJIIHHHA MOMCHTA HH YMCHBIHaCTC2 T ce
3.4.2 MarHnTHbIe cBolcrpa LiCu,QO, c 100aBs1eHHeM Cepebpa Ji MOHOKDHCTA/ILJIOB, IIO/IYH€HBIX W3 pacIIaBoB LizO-4(1-x)CuO-4AgNO; c Ú < x < 0,5, H3M€P€HH1 T€MIICDATYVDHOl 34BHCHMOCTH HâMATHHH€HHOCTH KDHCT4/LIOB M(7) BBIIO.IH€HBI B Õ/1acTw 5 — 300 K B CJIaÕOM MaTHHTHOM Tove (H
= 20 Đ), HpH/IO?KCHHOM BJIOJIb OCH C KDHCT4J1IOB B pexuMax ZFC (OXJIAa/I€HH€
6e3 noua) H FC (oXJ1a3KneHBe B noe) Ha ZFC u FC KpHBBIX M(7) Ha6:IOaeTrcsJOBOJIEHO IHIHDOKHÍ MaKCHMYM B oOsacTH T = 37 K_ (pune 3.20),HH3KOTeMIIepatypHble MaTHHTHbI€ (Ùa3OBbIe Iepexo/bI npH Ti HW To WpOABIAIOTCA
PucyHok 3.20 TemiepaTypHble 33BHCHMOCTH HaMarHHYeHHOCTH KPHCTAaJJIOB, BbIPalleHHbIX W3 Li(Cuy Ag,)202 c x = 0 (1), 0,05 (2) u 0,15 (3) B MocTOsHHOM
TOIbKO Ha IDOH3BOIHBIX diM(7)/d7T 27H /aHHbI€E HO HH3KOTeMI€DATYDHBIM 3aBHCHMOCTSM M(7) đonoỜHhI jis LiCu,O, [68, 73, 94—97].
Ha FC 3aBncnMOCTH M(T) KpHCTAJLIOB c x = 0,05, KDOM€ Toro, 4eTKO IIPOABJIACTCA H3JIOM B OÔ/1acTH 7.3 = 150 K, 0 KOTODOM COOÔII18/INCb B padotax [69, 85, 90] Hnx%e 74; Ha6.1IOIaerc HeoÔDaTHMOCTb M€XJIY KDHBbIMH ZFC u FC Ha KDHCT8.17IAaX € ÕO/I€€ BbICOKHM CO/I€DKaHWeM Ag (x > 0,05) aHOMđJIHW MaâTHHTHBIX CBOHCTB B OÔ/1acTw 74+ = 150 K He nposBssaroTes (puc 3.20).
OƠHaDVX€HHHBIC CVIHICCTBCHHBIC W3MeCHeHHA MATHHTHBIX CBỌCTB
KDHCTAJLIOB Cc /IÕABJICHHCM B HHX aTOMOB C€D€ỐDA BbI3BAHBI, OH€BHJHHO,
YaCTHUHbIMH 33M€IICHHSMH KaTHOHOB Li u Cu ma Ag” )ẽ[ J1 1€Ta/IbHOH
HHT€DIID€TAIINH BIMAHHA VK33AHHBIX 3aM€II€HHÍÍ Ha CBOèẽCTBA KDHCTAJ1JIOB HY?KHBICB€/I€HH4 O KOHKD€THOM DACIID€J€/I€HHW KaTHOHOB CepeOpa HO IIO3HIIHSM JIMTHA HM€JIH B KDHCT4JIIWd€CKOl CTDYKTYDp€ LICu¿O;, KOTODBI€ MOryT ObITb IIOJIYW€HBI CIOMOIHIBIO HEHTPOHO — CTDYKTYDHOTO a8H4JIH3a.
3.5 3,I€KTDpO0(ÙH3HW€CKH€ CBOHCTBA LICu;O;
3.5.1 MoHoKpncTa.1IbI LiCu,0, WH3yqaeMBI€ KDHCTAJLIBI ÕBIJIH BBIDAII€HbI M€TO/IOM pacTBOpa B DaCIIAB€.
MoHO/IOM€HHOCTb KDHCTAđJILIA KOHTDOJIHDOBAIH C HOMOIHIbBIO peHTreHa H
IIOJIIDH3AIWOHHOTO MHKpOCKOHa ẽ3ydaeMHI oO0pa3ell HM€I dopmy
IIADALI€/IEIHI/IA ¢ pasMepaMu 5X5X2 MM’, IDHH€M OCb € ỐbLIA ODH€HTHDOBAHA
II€DII€H,JIHKYJIIDHO IIOB€DXHOCTH HaHÔOLIbII€l TpaHH, OCH a H Ð HaIIDABJI€HbI B7IOJIb ee CTODOH B Buy /IOCTATOHHO BBICOKOTO COIDOTHBJICHH1 MaT€DHa/Ia WH3M€D€HH1 IIDOBO/JWMOCTH OCYVII€CTB/1JIH 7IBYXKOHTAKTHBIM CIOCÒOM.
Ha pnc.3.2ẽ IIOKAa3aHa T€MI€DATYDHA1 33BHCHMOCTb CTATHH€CKOH
IPOBO/IHMOCTH O(@ = 0) KpwcTa.11a M1 Ha puc 3.21 IIpeCTaBJI€HBI 10 aÕCIWcce
/JB€ HIKđ/IBI: MOTTOBCKad 7 H aKTHBaHHH 7 (Ha BCTaBK€) llepBad IIKa/a
PucyHok 3.21 TunwuHas TemnepatypHad 32BHCHMOCTE CTATHu€CKOl IIDOBOJH-
MOCTH Ơ(0) kpuctamia LiCu,O, To JByM HIKđJIAM: MOTTOBCKOl 7” “” u aKTHBaIMH 7” (Ha BCTaBKe).|
PucyHok 3.22 AHW3orponnws AC u DC npoBo/wMoc†refi (KpwBbie 1A, 1B nw 1C H3M€DHBI IIDH II€DCM€HHOM Halips>KeHuH YacToTOH 10 KI 4 aMIINTYOBH ~1 B,
B7OJIb a, b, c; KpHBa41 2A - IpH qacTore 4,5 I, 4 aMIINTYy€ 0,3 B, KpwnBbIe 2B u 2C - Ha MOCTOAHHOM TOK€ IIDH HaIID3›KeHHH cMeIIeHws ~10 B, kpucram M1).
XapaKT€PHa Jia TpexmMepHodu TIIIIIJHII, a Bropax wa aKTHBAHHOHHOTO D€?KHMaA IHIBC H3 J1nHelHbix NOATOHOK BHAHO, YTO IHDBDKKOBHH Tun c THIIƯHII
IIDOSB/JI1€TC# IDHÔIH3WT€G/IbHO B OOJIacTH TeMIIeparyp 300 — 100 K c IapaMeTpOM
7; ~ 10° - 10° K JIna Tewneparyp 300-360 K xopomas 1wHeliHaa Io/IFOHKA IIOJIYdA€TC1 HO HIKaI€ 7 he 2H€eprwel aKTrHBaHinn fF, ~0,35 — 0,44 9B llpn
TeMIIEDaTYypax Hwe 25 xapakrep DC IpOBO/IWMOCTH D€3KO H3MeHAeTCA: B ITOH OỐJIACTH OHA OIIITb HO/IHHHSGTCọE T€DMOAKTHBAIHOHHOMV 3aKOHy AppeHuyca c 2H€PIH€l aKTHBaAHHH EL, ~5 - 6 M2B, HTO MO3KGT ObITh CBA3AHO C KTHBAIMe€fH HOCHTeJIeH 3apsyja €D€3 MarHUTHY!O ?K€CTKYKO HII€JIb.
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