the magnetic properties of materials

... increasing of anisotropy property of ferrites Ni1-xCoxFe2O4, hence it was the increasing of HC The increasing of HC proved that the soft magnetic property of ferrite NiFe2O4 changed to the hard magnetic ... (3) where B2θ is the full width half maximum (rad), λ the wavelength of the X-ray, θ the angle between the incident and diffracted beams (degree) and d the particle size of the sample (nm) (in ... of materials, the second term can take part of several tens percent of HC and the last one whereas can only reach several hundreds of gauss Thus, the increasing of Co-concentration led to the...

Ngày tải lên: 13/02/2014, 04:20

... is the angle between the projection of the tilt of the z axis on the xÂ, y plane (dened direction of tilt of z and the x axis), and j % a + c denes the location of the rhombic (x, y) axes The ... conservation of the magnetic anisotropies of low-spin hemin with His/cyanide ligation The 10 tilt of the major magnetic or z-axis is shown to be consistent with the % 10 tilt of the Fe-CN vector from the ... of the inuence of the heme orientation on functional properties of myoglobin Biochim Biophys Acta 1388, 349362 Emerson, S.D & La Mar., G.N (1990) NMR determination of the orientation of the magnetic...

Ngày tải lên: 23/03/2014, 17:22

... content of oxygen groups, compared with the other materials The oxidation treatments affected the different properties of the carbon materials and the effects depended on the severity of the oxidation ... support, thereby facilitating the access of the aqueous solution of the metal precursor to the internal pore structure during the impregnation stage And on the other hand, it is expected that they ... position of the maximum of the PSD was used as the average pore diameter The textural properties of both the supports and catalysts were determined by this technique The surface chemistry of the carbon...

Ngày tải lên: 23/04/2014, 22:47

... supports the reason for the presence of the lossy capacitor hysteresis behavior of the composites Conclusions In this work, the properties of BZT93/NiO composites were determined for the first ... diffraction results revealed the presence of NiO particles in the composites The additive of NiO nanoparticles enhanced the magnetic behavior The increase of loss tangent affected the ferroelectric hysteresis ... Further, with increasing NiO content, the structure of the composites became more heterogeneous This may contribute to the diffuse phase transition of the samples From Figure 4, the increase of...

Ngày tải lên: 20/06/2014, 23:20

... nanocomposites, where the applied magnetic field is perpendicular to the surface of the InP template or parallel to the axis of InP channel For the deposition time of 30 s, the Co/InP nanocomposite ... channel wall surface of the InP template than gather at the bottom of channel, which may result from conductivity of n-type porous InP template In other words, the deposition of metallic Co particles ... participated in the design of the study, provided the theoretical and experimental guidance, performed the statistical analysis, and revised the manuscript LM participated in the design of experimental...

Ngày tải lên: 21/06/2014, 04:20

... physical properties of the multi-component ceramics based on PZT and the relaxor ferroelectric materials, Pb(Zn1/3Nb2/3)O3 and Pb(Mn1/3Nb2/3)O3 The results of the thesis will open up prospects for the ... fabrication of electronic ceramic materials in our country, particularly the feasibility of application of ceramic materials for fabricating ultrasonic sensors, ultrasonic cleaners The layout of the thesis: ... Plot of ln (1/ 1/m) versus ln(T - Tm) of MP (a), MZ (b) sample groups 3.1.3 The dependence of the dielectric properties versus the frequency Figure 3.3, 3.4 show the temperature dependence of the...

Ngày tải lên: 04/12/2014, 02:54

... where the two dash lines show the boundary of the Ni rich region 80  Figure 6.6: (a) Magnetic moment of TiO2 as function of the measuring temperature In the legend, the number ahead of ... addition, to eliminate the effect of the substrate on the measured electronic and magnetic signals of the sample, the substrate should be thermally inert in high vacuum because most of the films are prepared ... transparency) of TiO2 drastically However, the effect of cationic dopants on the shift of the energy levels is not fully understood In this thesis, we will discuss the changing of the bandgap as well as the...

Ngày tải lên: 10/09/2015, 09:12

... interpret the extracted parameters 1.2.5 Consideration of the Substrate Effect One of the most popular applications of nanoindentation is the determination of the mechanical properties of thin films The ... ), Pmax ) at the end of the loading segment 67 The effect of the internal friction coefficient k on C for elasto-plastic materials 71 4-6 The effect of σ on M / σ 72 4-7 The effect of E * on M ... Insightful discussions with them helped me a lot in the development of the ideas in this thesis Their invaluable insights into the field of mechanics of materials and their ability in explaining...

Ngày tải lên: 12/09/2015, 09:59

... λ: the wavelength, d: the interplanar spacing of the reflecting (diffracting) plane and θ: the angle of the incidence and of the diffraction of the radiation relative to the reflecting plane The ... Schematic illustration of diffraction of X-ray; θ is the angle of the incidence and of the diffraction of the radiation relative to the reflecting plane; d is the interplanar spacing of the reflecting ... structure The magnetic properties of granular thin film are different to those of continuous thin films because the magnetic particles of granular film are isolated Furthermore, the growth of magnetic...

Ngày tải lên: 13/09/2015, 21:23

... guidance on the understanding of structural and magnetic properties of CMS Heusler alloys and its further application into the field of spin-electronics 1.6 Outline of thesis This thesis was organized ... which, the structures, magnetic properties and interfacial morphologies of these MgO buffered CMS thin films were studied 3) Cr was used as the buffer layer The structures and magnetic properties of ... scenarios, shifts of Fermi level occurred Based on their calculations, the shift of EF 17 was attributed to the larger extension of p states compared to the d states of Sb Movement of Fermi level...

Ngày tải lên: 16/10/2015, 12:00

... on the properties of each material The physical origin of the MCE is the coupling of the magnetic sub lattice to the applied magnetic field, H, which changes the magnetic contribution to the ... many different types of distortions which can occur from the ideal structure These include tilting of the octahedra, displacements of the cations out of the centers of their 17 Thesis Vu Thi Huong ... change can be further increased when the order-parameter of the phase transition changes strongly within the temperature range of interest The magnitudes of the magnetic entropy and the adiabatic...

Ngày tải lên: 24/06/2016, 12:58

... time of heatsetting (air, solvent or water) and the tension applied to the substrates during heatsetting [11, 12] The essence of this paper is to determine the effect of time of heatsetting on the ... Figure Effect of time of heatsetting on the linearity of load extension in weft direction of knitted Ingeo™ Poly (lactic acid) Figure Mean effect of time of heatsetting on the linearity of load extension ... [PLA] Figure Mean [Ā] of effect of time of heatsetting on the tensile extension EM [%] of Ingeo™ Poly (lactic acid) 3.2 Linearity of load extension curve LT [-] The linearity of load extension curve...

Ngày tải lên: 05/09/2013, 16:10

... tensile test specimens and mm in diameter and a lengthen of 50 mm for the samples used for compressive tests The compression and the tensile tests of bulk metallic glasses were conducted at different ... ng k thu t Experimental In the current research, different metallic materials were employed, for example pure Cu and Cu-Al single crystals, Cu bicrystals were grown by the Bridgman method in a ... and fatigue tests of the pure Cu and Cu-Al single crystals, Cu bicrystals and ultrafine-grained Al-Cu polycrystals were performed on Shimadzu testing machine After fracture, all the specimens were...

Ngày tải lên: 26/10/2013, 17:15

... A further demonstration on the role of La and Co substitution is the microstructure observation Figs and show the SEM pictures of the samples From both figures we can see the influence of substitution ... value of magnetization To find the solution for this problem, almost the authors focusing on the way to make increase up-spin of positions 2a and 2b About the role of La to improve hard magnetic properties ... only restricting the grain growth but making the more shape anisotropy of them and both these factors leading to enhance the hard magnetic properties of studied samples Our purpose is not only...

Ngày tải lên: 13/02/2014, 03:20

... in the ECM, and the pH of the ECM control the filtering aspect of the ECM The ECM is a transit area for the passage of nutrients from the bloodstream into the cells and for toxins released by the ... improve the electrical functions of the ECM Therefore the composition and degree of toxicity of the ECM-glycocalyx interface will affect the electrical field and the flow of biocurrents in the ECM The ... between the inside of the cell and the outside of the cell The difference is known as the membrane potential • Because the membrane potential is created by the difference in the concentration of ions...

Ngày tải lên: 14/02/2014, 22:20

... disappearance of specific resonances without the concomitant appearance of other signals in other parts of the spectrum This result could be a consequence of the paramagnetic properties of Fe(II), ... Titration of CyaY with Fe2+ and Fe3+ Addition of Fe2+ induced the displacement of several resonances in the [1H,15N]-HSQC NMR spectrum of CyaY, but the most striking consequence of the addition was the ... paramagnetic effects around the binding site: they induce a line ˚ broadening of 1–100 Hz in nuclei located within A of the binding site, depending on the molecular mass of the protein and the...

Ngày tải lên: 18/02/2014, 16:20

... in the apparent Km values for these substrates The interpretation of these results is complicated because the levels of uncoupling will be variable depending on the mutant and the nature of the ... binding In the case of the R258K mutant this may be allowed because of disordering of the lysine side-chain, as was previously observed for the R258Q mutant (Fig 1) [17] In the case of the R258H ... of mutations appears to be similar regardless of whether the prime substrate was penicillin G or ampicillin Utilization of 2-oxoglutarate by the R258 mutants The level of 2-OG conversion in the...

Ngày tải lên: 20/02/2014, 23:20

... reveals that the large increase of Mn4+ content plays a crucial role in variations of magnetic properties of the samples We found that the charge-ordering state coexists with a antiferromagnetic ... the magnetic The magnetic properties and charge-ordering state in… 29 entropy change, ∆Smag, can be approximately calculated using isothermal magnetization measurements [7] Fig presents the magnetic ... smaller than those of the undoped LaMnO3 compounds, due to the fact that the radius of Ca2+ (0.99 Å) is smaller than that of La3+ (1.016 Å) [3] Figure 1a, 1b: XPD patterns of the La1-xCaxMnO3-δ...

Ngày tải lên: 05/03/2014, 14:20

... compounds of interest in the prevention of colon cancer In the present study, we investigated the relationship of different structural factors of procyanidins, such as the mean degree of polymerization ... significantly absorbed in the intestinal tract, and reach the colon mainly intact [27] They are therefore bioavailable to the epithelial cells in the intestinal wall, where procyanidins and other phenolics ... spectroscopy to test the radical-scavenging capacity of the fractions The results show that the oligomeric fractions (VIIIG, IVG, VIIIP and IVP), which were the most effective in the previous assays...

Ngày tải lên: 07/03/2014, 05:20

... domain of PABPN1 consisting of amino acids 1–125 of the wild-type protein (N-WT) Because the aim of this study was to investigate the effect on the fibrillation properties of the most extreme disease-associated ... using the nanoscope analysis software Chemical stability of fibrils The chemical stability of fibrils was tested after the fibrillation process was completed (no further rise of ANS signals) The sample ... [26] The formation of amorphous aggregates was independent of the presence or length of the poly l-alanine sequence In contrast, no amorphous aggregates were observed with the N-terminal domain of...

Ngày tải lên: 07/03/2014, 11:20