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First-principles density-functional theory calculations show switching magnetization by 90 degree can be achieved in ultrathin BFO film by applying external electric-field. Up-spin carriers appear to the surface with positive field while…

Materials Science · Physics 2013-02-01 Hong-Jian Feng

Exfoliated magnetic 2D materials enable versatile tuning of magnetization, e.g., by gating or providing proximity-induced exchange interaction. However, their electronic band structure after exfoliation has not been probed, most likely due…

We have carried out detailed experimental studies of the exchange bias effect of a series of CoO/Co(111) textured bilayers with different Co layer thickness, using the magneto-optical Kerr effect, SQUID magnetometry, polarized neutron…

Materials Science · Physics 2016-08-31 F. Radu , M. Etzkorn , R. Siebrecht , T. Schmitte , K. Westerholt , H. Zabel

The magnetic properties of antiferromagnetic (AFM) EuTe epitaxial layers and short period EuTe/PbTe superlattices (SLs), grown by molecular beam epitaxy on (111) BaF$_2$ substrates, were studied by magnetization and neutron diffraction…

In this study, we report the epitaxial growth of a series of {\alpha}-Sn films on InSb substrate by molecular beam epitaxy (MBE) with thickness varying from 10 nm to 400 nm. High qualities of the {\alpha}-Sn films are confirmed. An enhanced…

Materials Science · Physics 2020-09-29 Yuanfeng Ding , Huanhuan Song , Junwei Huang , Jinshan Yao , Yu Gu , Lian Wei , Yu Deng , Hongtao Yuan , Hong Lu , Yan-Feng Chen

A remarkably high saturation magnetization of ~0.4mu_B/Fe along with room temperature ferromagnetic hysteresis loop has been observed in nanoscale (4-40 nm) multiferroic BiFeO_3 which in bulk form exhibits weak magnetization (~0.02mu_B/Fe)…

Materials Science · Physics 2011-11-09 R. Mazumder , P. Sujatha Devi , Dipten Bhattacharya , P. Choudhury , A. Sen , M. Raja

The exchange-bias training effect in IrMn-layer/ferromagnetic-ribbon heterostructure is studied by performing magnetoimpedance (MI) measurements. Asymmetric, hysteretic and single peak behavior of the MI response and a shift in the MI peak…

Mesoscale and Nanoscale Physics · Physics 2020-10-28 Mohammadreza Hajiali , Mohammad Javad Kamali Ashtiani , Loghman Jamilpanah , Majid Mohseni

Intrinsic exchange bias is known as the unidirectional exchange anisotropy that emerges in a nominally single-component ferro-(ferri-)magnetic system. In this work, with magnetic and structural characterizations, we demonstrate that…

Materials Science · Physics 2024-09-11 Detian Yang , Yaohua Liu , Xiaoshan Xu

Photoluminescence and magnetotransport measurements have been performed to assess the quality of modulation doped GaAs/AlGaAs heterostructures. The temporal evolution of the low-temperature electron mobility of samples prepared in a…

Materials Science · Physics 2009-11-10 Klaus Wagenhuber , Hans-Peter Tranitz , Matthias Reinwald , Werner Wegscheider

We have observed a large as well as path-dependent spontaneous exchange bias (H$_{SEB}$) ($\sim$30-60 mT) in a nanocomposite of BiFeO$_3$-Bi$_2$Fe$_4$O$_9$ across 5-300 K when it is measured in an unmagnetized state following zero-field…

Materials Science · Physics 2013-04-09 Tuhin Maity , Sudipta Goswami , Dipten Bhattacharya , Gopes C. Das , Saibal Roy

The multiple-spin exchange frequencies of the bilayer Wigner crystal are determined by the semiclassical method, which is asymptotically exact in the limit of dilute electron densities. The evolution of the exchange frequencies with…

Strongly Correlated Electrons · Physics 2025-03-05 Ilya Esterlis , Dmitry Zverevich , Zekun Zhuang , Alex Levchenko

Ferrimagnets have received renewed attention as a promising platform for spintronic applications. Of particular interest is the Mn4N from the ${\epsilon}$-phase of the manganese nitride as an emergent rare-earth-free spintronic material due…

Materials Science · Physics 2023-08-23 Zhijie Chen , Christopher J. Jensen , Chen Liu , Xixiang Zhang , Kai Liu

Magnetic nanostructures revealing exchange bias effect have gained a lot of interest in recent years due to their possible applications in modern devices with various functionalities. In this paper, we present our studies on patterned…

Mesoscale and Nanoscale Physics · Physics 2018-09-24 Marcin Perzanowski , Michal Krupinski , Arkadiusz Zarzycki , Andrzej Dziedzic , Yevhen Zabila , Marta Marszalek

The effect of an exchange field on electrical transport in thin films of metallic ferromagnetic manganites has been investigated. The exchange field was induced both by direct exchange coupling in a ferromagnet/antiferromagnet multilayer…

Condensed Matter · Physics 2009-10-31 I. N. Krivorotov , K. R. Nikolaev , A. Yu. Dobin , A. M. Goldman , E. D. Dahlberg

Multiferroic BaMnF$_4$ powder were prepared by hydrothermal method. Hysteretic field dependent magnetization curve at 5 K confirms the weak ferromagnetism aroused from the canted antiferromagnetic spins by magnetoelectric coupling. The…

Materials Science · Physics 2015-12-18 Shuang Zhou , Ji Wang , Xiaofeng Chang , Shuangbao Wang , Bin Qian , Zhida Han , Qingyu Xu , Jun Du , Peng Wang , Shuai Dong

In this work, we comprehensively investigate and discuss the structural, magnetostatic, dynamic, and magnetoresistive properties of epitaxial Co/Mo superlattices. The magnetization of the Co sublayers is coupled antiferromagnetically with a…

Frustrated antiferromagnets offer a captivating platform to study the intricate relationship of magnetic interactions, geometric constraints, and emergent phenomena. By controlling spin orientations, these materials can be tailored for…

Magnetic systems exhibiting exchange bias effect are being considered as materials for applications in data storage devices, sensors and biomedicine. As the size of new mag- netic devices is being continuously reduced, the influence of…

In conventional exchange-bias system comprising of a bilayer film of ferromagnet (FM) and antiferromagnet (AFM), investigating the role of spin-disorder and spin-frustration inside the AFM and at the interface has been crucial in…

Materials Science · Physics 2020-11-30 Suman Mundlia , Karthik V. Raman

Based on a multi-scale calculations, combining ab-initio methods with spin dynamics simulations, we perform a detailed study of the magnetic behavior of Ni2MnAl/Fe bilayers. Our simulations show that such a bilayer exhibits a small exchange…

Mesoscale and Nanoscale Physics · Physics 2017-09-06 Rocio Yanes , Eszter Simon , Sebastian Keller , Balazs Nagyfalusi , Sergii Khmelevsky , Laszlo Szunyogh , Ulrich Nowak