Controllable Ground Magnetic States and Exchange Bias in LaMnO3 Thin Films by the Design of Stoichiometry Offset

2021 ◽  
Author(s):  
Di Wang ◽  
Bin He ◽  
Jinrui Guo ◽  
Nana Zhang ◽  
Chaoqun Shi ◽  
...  
Keyword(s):  
Thin Films ◽  
Exchange Bias ◽  
Ground Magnetic ◽  
Magnetic States

Strain Control of Phase Transition and Exchange Bias in Flexible Heusler Alloy Thin Films

2021 ◽  
Author(s):  
Yechao Ling ◽  
Yong Hu ◽  
Haobo Wang ◽  
Ben Niu ◽  
Jiawei Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Phase Transition ◽  
Exchange Bias ◽  
Heusler Alloy ◽  
Strain Control

Exchange Bias in CrO2/Cr2O3 Bilayer Thin Films

2006 ◽  
Vol 45 ◽  
pp. 2528-2533 ◽  
Author(s):  
S. Srinath ◽  
N.A. Frey ◽  
H. Srikanth ◽  
G.X. Miao ◽  
A. Gupta
Keyword(s):  
Thin Films ◽  
Magnetic Anisotropy ◽  
Variable Thickness ◽  
Exchange Bias ◽  
Exchange Coupling ◽  
Hysteresis Loops ◽  
Anisotropy Constant ◽  
Effective Magnetic Anisotropy ◽  
Large Anisotropy

We have investigated the exchange bias in CVD grown epitaxial CrO2/Cr2O3 bilayer thin films using hysteresis loops and resonant RF transverse susceptibility. M-H loops indicated an enhanced coercivity without appreciable loop shift and the transverse susceptibility in CrO2/Cr2O3 bilayers revealed features associated with both the ferromagnetic and antiferromagnetic phases. In addition, TS yielded large anisotropy constant (Keff) values depending on the fraction of Cr2O3 present. The large anisotropy fields observed cannot be accounted for by the variable thickness of CrO2 alone and are indicative of possible exchange coupling between CrO2 and Cr2O3 phases that significantly affects the effective magnetic anisotropy.

scholarly journals Comparison of Exchange-Bias Using Epitaxial and Polycrystalline Ir0.2Mn0.8 Antiferromagnetic Thin Films: a TEM and Lorentz TEM Study

2010 ◽  
Vol 16 (S2) ◽  
pp. 1914-1915
Author(s):  
A Kohn ◽  
A Kovacs ◽  
S-G Wang ◽  
C Wang ◽  
J Dean ◽  
...  
Keyword(s):  
Thin Films ◽  
Exchange Bias

Extended abstract of a paper presented at Microscopy and Microanalysis 2010 in Portland, Oregon, USA, August 1 – August 5, 2010.

scholarly journals Exchange bias and spin glass behavior in biphasic NiFe2O4/NiO thin films

2016 ◽  
Vol 419 ◽  
pp. 29-36 ◽  
Author(s):  
Andrew C. Pebley ◽  
Preston E. Fuks ◽  
Tresa M. Pollock ◽  
Michael J. Gordon
Keyword(s):  
Thin Films ◽  
Spin Glass ◽  
Exchange Bias ◽  
Spin Glass Behavior ◽  
Glass Behavior

Exchange bias in zinc ferrite-FeNiMoB based metallic glass composite thin films

2015 ◽  
Author(s):  
Lisha R ◽  
Hysen T ◽  
Geetha P ◽  
Aravind P. B ◽  
S. Ojha ◽  
...  
Keyword(s):  
Thin Films ◽  
Metallic Glass ◽  
Exchange Bias ◽  
Zinc Ferrite ◽  
Glass Composite ◽  
Composite Thin Films

Interface correlated exchange bias effect in epitaxial Fe3O4 thin films grown on SrTiO3 substrates

2014 ◽  
Vol 105 (24) ◽  
pp. 241604 ◽  
Author(s):  
Qiu-Xiang Zhu ◽  
Ming Zheng ◽  
Ming-Min Yang ◽  
Ren-Kui Zheng ◽  
Yu Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Exchange Bias ◽  
Bias Effect ◽  
Exchange Bias Effect

Domain structure in LaFeO3 thin films and its role on exchange coupling

2001 ◽  
Vol 666 ◽  
Author(s):  
Jin Won Seo ◽  
Jean Fompeyrine ◽  
Heinz Siegwart ◽  
Jean-Pierre Locquet
Keyword(s):  
Thin Films ◽  
Exchange Bias ◽  
Domain Walls ◽  
Surface Defects ◽  
Structural Parameters ◽  
Domain Size ◽  
Coupled Systems ◽  
Epitaxial Relationship ◽  
Ferromagnetic Domains ◽  
Individual Contributions

ABSTRACTThe origin of the exchange bias between a ferro- and an antiferromagnet still is not fully resolved. Many structural parameters such as film thickness, roughness, domain size, domain walls, strain, dislocations, and surface defects play a role. To disentangle their individual contributions, one must correlate each of these structural effects with the exchange bias. Here we report our first such attempts using thin films of the antiferromagnetic orthoferrite LaFeO3 grown by molecular beam epitaxy. We investigate how the epitaxial relationship and strain affect the domain configuration as well as their size and orientation. Next, we explore how these different domains can pin ferromagnetic domains in exchange-coupled systems. We conclude that decreasing the domain size of the antiferromagnet leads to a higher exchange bias. The highest exchange bias was obtained for LaFeO3 films on MgO substrates.

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