Influence of Dielectric Film Thickness on the Magnetic Properties of the Magneto-Optical Multilayer Films

1997 ◽  
Vol 475 ◽  
Author(s):  
X.S. Miao ◽  
Y.C. Chan ◽  
Y.M. Huang ◽  
W.Z. Liu ◽  
Z.Y. Lee
Keyword(s):  
Magnetic Properties ◽  
Film Thickness ◽  
Magnetic Anisotropy ◽  
Dielectric Film ◽  
Magnetic Interaction ◽  
Multilayer Films

ABSTRACTThe magnetic interaction of magneto-optical multilayer films have been analyzed using the stress mechanism of coercivity and the single ion model of magnetic anisotropy. The relation between the magnetic properties of the multilayer films and the dielectric film thickness has been explained.

ELECTRONIC STRUCTURES AND REORIENTATION OF PERPENDICULAR MAGNETIC ANISOTROPY OF Co/Au(111) and Co/Pd(111)

2002 ◽  
Vol 09 (02) ◽  
pp. 865-869
Author(s):  
M. SAWADA ◽  
K. HAYASHI ◽  
A. KAKIZAKI
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Binding Energy ◽  
Film Thickness ◽  
Magnetic Anisotropy ◽  
Photoelectron Spectroscopy ◽  
Electronic Structures ◽  
Perpendicular Magnetic Anisotropy ◽  
Magnetization Direction ◽  
Electronic And Magnetic Properties

We have investigated electronic and magnetic properties of Co thin films epitaxially grown on Au(111) and Pd(111) substrates by spin- and angle-resolved photoelectron spectroscopy. In the Co/Au(111) system, the magnetization direction of Co changes from perpendicular to parallel to the surface at about 6 ML. The origin of the reorientation is qualitatively explained by the increasing contribution of Co 3d orbitals perpendicular to the surface. In the Co/Pd(111) system, the reorientation of the magnetization direction occurs at about 4 ML, the origin of which is explained as being due to the contribution of the upper Λ3 band of Co with increase of film thickness as in the case of the Co/Au(111) system. The stronger hybridization between Co 3d and Pd 4d states in the Co/Pd(111) system causes larger binding energy shifts of the Λ3 states than in the Co/Au(111) system.

Magnetic Anisotropy of Cerium Endohedral Metallofullerene

2001 ◽  
Vol 706 ◽  
Author(s):  
Masayasu Inakuma ◽  
Toshiaki Enoki ◽  
Haruhito Kato ◽  
Hisanori Shinohara
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Low Temperature ◽  
Magnetic Anisotropy ◽  
Rotational Motion ◽  
Applied Field ◽  
Magnetic Interaction ◽  
Magnetization Measurement ◽  
Antiferromagnetic Interaction ◽  
Antiferromagnetic Coupling

AbstractThe magnetic properties of Ce@C82 have been studied. The magnetic anisotropy of Ce@C82 was analyzed taking account of the crystal field of the interior C82 cage acting on Ce3+ ion. Results showed that the reduction of the susceptibility at low temperature was caused due to the antiferromagnetic coupling between Ce3+ ion and C82 cage. The magnetization measurement at several temperatures also supported the antiferromagnetic interaction at low temperature. The magnetic susceptibility larger than the calculated one was measured at higher temperatures due to the magnetic interaction between the metallofullerenes and between the particles in the crystal. The magnetization of some frozen Ce@C82 solutions was found to depend on the applied field magnitude. The dependence suggested that the magnetic anisotropy of Ce ion induced a torque to restrict the rotational motion of Ce@C82 by the field.

Preparation and Exchange Bias of a Cr2O3/(La0.7Sr0.3)MnO3 Magnetic Hetero Junction

2008 ◽  
Vol 388 ◽  
pp. 289-292 ◽  
Author(s):  
Takeshi Yokota ◽  
Takaaki Kuribayashi ◽  
Shotaro Murata ◽  
Manabu Gomi
Keyword(s):  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Exchange Interaction ◽  
Exchange Bias ◽  
Magnetic Interaction ◽  
Colossal Magneto Resistance ◽  
Magneto Resistance ◽  
Selection Of

We investigated the magnetic interaction between antiferromagnetic, magnetoelectric Cr2O3 film and ferromagnetic La0.7Sr0.3MnO3 film, which shows colossal magneto-resistance. Magnetic properties and structural analyses revealed that a decrease in the thickness of La0.7Sr0.3MnO3 films gives rise to a change in magnetic anisotropy from perpendicular to in-plane. The exchange interaction between Cr2O3 and La0.7Sr0.3MnO3 also changed depending on the magnetic properties of La0.7Sr0.3MnO3. This suggests that the crystallographical control and the selection of a suitable thickness of La0.7Sr0.3MnO3 are important to obtain an exchange interaction in the magnetic hetero system using colossal magneto-resistance material.

Microstructures and Magnetic Properties of Sputtered Expitaxial Co3Pt/Pt Multilayer Films

2008 ◽  
Vol 47-50 ◽  
pp. 583-587
Author(s):  
S.C. Chen ◽  
Po Cheng Kuo ◽  
Chih Long Shen ◽  
Y.H. Fang ◽  
S.L. Hsu
Keyword(s):  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Epitaxial Growth ◽  
Annealing Temperature ◽  
Perpendicular Magnetic Anisotropy ◽  
Multilayer Films ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Annealing Temperatures

Co3Pt films were deposited on Pt underlayers with various thicknesses by conventional sputtering in order to investigate the effect of Pt underlayers and annealing temperatures on their microstructure and the magnetic properties. From XRD and HRTEM analysises, as annealing at 300°C, a well epitaxial growth of Co3Pt (002) on Pt (111) underlayer that leads the film to present perpendicular magnetic anisotropy. However, Pt atoms in the Pt underlayer will diffuse seriously into Co3Pt layer as the annealing temperature is increased to 375°C that changes the compositions to approach equiatomic CoPt, and showing in-plane magnetic anisotropy with soft magnetic properties.

MAGNETIC PROPERTIES OF NANOCRYSTALLINE CO-FERRITE FILMS DEPOSITED ON SINGLE-CRYSTAL SiO2 SUBSTRATES USING PULSED LASER DEPOSITION

2008 ◽  
Vol 15 (01n02) ◽  
pp. 71-75 ◽  
Author(s):  
J. H. YIN ◽  
J. DING ◽  
B. H. LIU ◽  
X. S. MIAO ◽  
J. B. YI ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Film Thickness ◽  
Magnetic Anisotropy ◽  
Residual Strain ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Post Annealing ◽  
In Situ Heating ◽  
Ferrite Films

Co-ferrite films were prepared using pulsed laser deposition with both post-annealing and in situ heating processes. Magnetic properties of these films were studied in the function of temperature, film thickness, and substrate. The films using post-annealing processes exhibited isotropic microstructure, and the coercivity showed no obvious magnetic anisotropy and no strong dependence on film thickness. Co-ferrite films using in situ heating exhibited (111) highly textured structure and possessed perpendicular anisotropy as well as large coercivity. The preferential texture and magnetic anisotropy were closely associated with substrate temperature and thickness. Perpendicular Hc over 12.5 kOe was obtained in the 33 nm Co-ferrite film deposited on single crystal quartz substrate at 550°C. The high coercivity and perpendicular coercivity may be attributed to the nanocrystalline grain, textured orientation, and large residual strain in these films since large residual strain may induce strong stress anisotropy.

Dynamics and magnetic properties of NO molecules encapsulated in open-cage fullerene derivatives evidenced by low temperature heat capacity

2021 ◽  
Author(s):  
Yoji Horii ◽  
Hal Suzuki ◽  
Yuji Miyazaki ◽  
Motohiro Nakano ◽  
Shota Hasegawa ◽  
...  
Keyword(s):  
Heat Capacity ◽  
Magnetic Properties ◽  
Low Temperature ◽  
Magnetic Anisotropy ◽  
Fullerene Derivatives ◽  
Molecular Cages ◽  
Temperature Heat ◽  
Low Temperature Heat Capacity

Heat capacity analyses revealed dynamics and magnetic anisotropy of NO molecules confined in molecular cages.

scholarly journals Precise control of Jeff=12 magnetic properties in Sr2IrO4 epitaxial thin films by variation of strain and thin film thickness

2020 ◽  
Vol 102 (21) ◽  
Author(s):  
Stephan Geprägs ◽  
Björn Erik Skovdal ◽  
Monika Scheufele ◽  
Matthias Opel ◽  
Didier Wermeille ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Magnetic Properties ◽  
Film Thickness ◽  
Epitaxial Thin Films ◽  
Thin Film Thickness ◽  
Precise Control

Structures and Magnetic Properties of Fe/Co Multilayer Films

1988 ◽  
Vol 27 (Part 2, No. 11) ◽  
pp. L2105-L2107 ◽  
Author(s):  
Matahiro Komuro ◽  
Yuzoo Kozono ◽  
Shinji Narishige ◽  
Masanobu Hanazono ◽  
Yutaka Sugita
Keyword(s):  
Magnetic Properties ◽  
Multilayer Films
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