Magnetic anisotropy and coercivity in magnetic thin films

... given annealing temperature, the results are identical for a cumulative step-by-step annealing and after continuous annealing Results During annealing, the grain size and structure of thin oxide films ... Conclusion Table summarises the main results for the various structures observed during annealing of WO3 thin films The thin films were obtained by evaporation und...

Ngày tải lên: 20/03/2014, 13:05

... optimization of device performance requires a well-established knowledge of the electrical and optical properties of GaSe thin films, in this paper, we report the results on electrical and optical ... respectively, and K is Boltzmann constant On the basis of best fitting of our data with thermally activated type of conduction, the values of activation energy...

Ngày tải lên: 21/06/2014, 17:20

... electronic and magnetic properties of epitaxially grown transition metal doped TiO2 thin films by pulsed laser deposition technique on different metal oxide substrates Crystal Structure of TiO2 TiO2 ... magnetic semiconductor applications The objective of this thesis is to investigate the defect induced electrical, optical, magnetic and structural p...

Ngày tải lên: 08/09/2015, 15:20

... the dewetting process of metal thin film, both liquid -state dewetting and solid- state dewetting However, most of the studies are on dewetting of elemental materials In particular, for solidstate ... Sketch of a liquid drop at solid substrate There are generally two types of dewetting process of thin film, liquidstate and solid- state In liquid -state...

Ngày tải lên: 09/09/2015, 11:26

... resistivity for anatase Ti1- xTaxO2 (x = – 0.08) thin films and rutile Ti1- xTaxO2 (x = 0.08) thin film; (b) Variation of carrier density and Hall mobility for anatase Ti1- xTaxO2 thin films as a function ... transport, optical and magnetic properties appear to be quite distinct 1.2 Defects and Dopings in Semiconductors 1.2.1 Intrinsic and Extrinsic Defects...

Ngày tải lên: 09/09/2015, 18:49

... potential of BTS thin films The efforts toward improving the tunable and pyroelectric properties of BTS thin films have demonstrated the appealing prospective applications of BTS thin films in the ... investigating the tunable and pyroelectric properties of the B-site doped BaTiO3, i.e., Ba(Ti1-xSnx)O3 (BTS) thin films The effects of stress and micros...

Ngày tải lên: 10/09/2015, 15:48

... OPTIMIZATION OF PERPENDICULAR EXCHANGE BIAS 81 93 97 CHARACTERISTICS IN [Pd /Co] /FeMn THIN FILM SYSTEM 5.1 Introduction 97 iii 5.2 The effect of the seed layer on PEB [Pd /Co] /FeMn and FeMn/ [Co/ Pd] thin ... along the in- plane direction, and (e) a schematic diagram illustrating the spin configuration of Si/Ta(2)/ [Pd( 0.6) /Co( 0.23)] /FeMn( 11.6 nm)/Ta e...

Ngày tải lên: 10/09/2015, 15:53

... done on the effects of layers added to the FePt magnetic layer The focus point of this thesis project is to carry out a systematic study on the influence of additional nonmagnetic layers on the ... performance The effect of additional nonmagnetic layers on the phase transformation of FePt thin films with different substrates is the m...

Ngày tải lên: 13/09/2015, 21:23

... anisotropy and growth mechanism of thin films are reviewed, which provides the background to understand this work 1.2 Magnetic anisotropy and coercivity of thin films 1.2.1 Magnetic anisotropy of films ... (111)-epitaxial CoFe2O4 films on (0001)-Al2O3 .79 4.3 Magnetic anisotropy of epitaxial Co -ferrite films 82 4.4 Growth and magnetic anisotropy...

Ngày tải lên: 14/09/2015, 14:12

... study magnetic and structural properties of FePt -Ag thin films, the first step is to fabricate the materials Characterization of the thin films provided information about structural and magnetic ... coupling and recording performance Chapter • Correlation between the microstructure and magnetic properties in cosputtered FePt -Ag thin films • Sequent...

Ngày tải lên: 30/09/2015, 06:41

... 3: Compositional dependence on the phase transition of FeRh thin films 3.2.2 Magnetic properties of Fe100-xRhx thin films Magnetization of FeRh thin films of various compositions were shown in ... equiatomic and Rh-rich 48 FeRh thin films 4.2.2.2 Magnetic properties of equiatomic and Rh-rich FeRh 49 thin films 4.2.2.3 Temperature dependent...

Ngày tải lên: 02/10/2015, 17:15

... method of pulsed laser deposition (PLD); investigate the growth mechanism of high quality MgO films on silicon Fabricate highly oriented CoFe2O4 films on silicon with the help of MgO buffer layer and ... thesis 2.1.1 Pulsed- laser deposition One of the most significant approaches to oxide film growth is pulsed- laser deposition Pulsed- laser dep...

Ngày tải lên: 07/10/2015, 10:10

... -magnetocrystalline anisotropy, shape anisotropy, and stress-induced anisotropy play an important role in magnetic materials, especially in thin films, and any of them may be predominant in special ... anisotropy In part I, magnetocrystalline anisotropy was studied in Al-doped barium ferrite, both in powders and in thin films Other kinds of anisotorpies, i...

Ngày tải lên: 10/11/2015, 11:33

... Ta ratio, (ii) Co- Ta of 15% Ta ratio, (iii) Co- Ta of 20% Ta ratio and (iv) Co- Ta of 25% Ta ratio 68 Fig 4.6.4 MFM images of (i) Co, (ii) Co- Ta (5%), (iii) Co- Ta (10%), (iv) Co- Ta (15%), (v) Co- Ta ... Co- Ta (20%) and (vi) Co- Ta (25%) 69 Fig 4.6.5 TEM images showing the crystal structures of (i) Co- Ta of 10% Ta ratio, (ii) Co-...

Ngày tải lên: 10/11/2015, 11:35