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Electrical transport properties as a function of magnetic field and time have been investigated in polycrystalline, Nd_{0.84}Sr_{0.16}CoO_3. A strong exchange bias (EB) effect is observed associated with the fairly large intragranular…

Strongly Correlated Electrons · Physics 2009-11-09 M. Patra , S. Majumdar , S. Giri

The exchange bias (EB) effect, pivotal in magnetic data storage and sensing devices, has been observed not only in interfacial regions but also in intrinsic ferromagnetic materials. Here, we've uncovered a robust and stable exchange bias…

Materials Science · Physics 2023-12-29 Xi Zhang , Xiuquan Xia , Qiye Liu , Yonggang He , Le Wang , Junhao Lin , Jia-Wei Mei , Yingchun Cheng , Jun-Feng Dai

The exchange bias effect is commonly used to shift the coercive field of a ferromagnet. This technique is crucial for the use of magnetic tunnel junctions as logic or memory devices. Therefore, an independent switching of the two…

Materials Science · Physics 2015-05-13 Niclas Teichert , Alexander Boehnke , Anna Behler , Bruno Weise , Anja Waske , Andreas Hütten

Magnetization reversal of soft ferromagnetic Fe layer, coupled to [Co/Pt]ML multilayer [ML] with perpendicular magnetic anisotropy (PMA), has been studied in-situ with an aim to understand the origin of exchange bias (EB) in orthogonal…

Exchange bias (EB) is a fundamental phenomenon in widespread information technologies. However, a comprehensive understanding of its microscopic origin remains a great challenge. One key issue in the debate is the role of frustration and…

Strongly Correlated Electrons · Physics 2024-09-09 S. J. Li , D. Zhao , J. Li , B. L. Kang , M. Shan , Y. B. Zhou , X. Y. Li , T. Wu , X. H. Chen

La$_{1.5}$Ba$_{0.5}$CoMnO$_{6}$ is a re-entrant cluster glass material exhibiting a robust negative exchange bias (EB) effect even after being cooled from an unmagnetized state down to low temperature in zero magnetic field. Here we…

Materials Science · Physics 2020-12-02 M. Boldrin , L. T. Coutrim , L. Bufaiçal

Modern magnetic thin film devices owe their success in large part to effects emerging from interlayer coupling and exchange interaction at interfaces. A prominent example is exchange bias (EB), a magnetic coupling phenomenon found in…

Materials Science · Physics 2009-12-15 Sebastian Brück , Patrick Audehm , Gisela Schütz , Eberhard Goering

The materials exhibiting exchange bias (EB) have been extensively investigated mainly due to their great technological applications in magnetic sensors, but its underlying mechanism remains elusive. Here we report the novel coexistence of…

Materials Science · Physics 2022-07-12 Xiaoyan Yang , Yi Qiu , Jie Su , Yalei Huang , Jincang Zhang , Xiao Liang , Guixin Cao

We present a numerical simulation study of the exchange bias (EB) effect in nanoparticles with core/shell structure aimed to unveil the microscopic origin of some of the experimental phenomenology associated to this effect. In particular,…

Materials Science · Physics 2008-06-20 Oscar Iglesias , Xavier Batlle , Amilcar Labarta

Exchange bias is a horizontal shift of the hysteresis loop observed for a ferromagnetic layer in contact with an antiferromagnetic layer. Since exchange bias is related to the spin structure of the antiferromagnet, for its fundamental…

Materials Science · Physics 2009-11-07 U. Nowak , A. Misra , K. D. Usadel

The exchange bias (EB) in LaMn_{0.7}Fe_{0.3}O_3 is observed by the negative shift and training effect of the hysteresis loops, while the sample was cooled in external magnetic field. The analysis of cooling field dependence of EB gives the…

Strongly Correlated Electrons · Physics 2009-11-13 M. Patra , K. De , S. Majumdar , S. Giri

Here, we study an interface induced magnetic properties in 3$d$-5$d$ based multilayer made of La$_{0.67}$Sr$_{0.33}$MnO$_3$ and double perovskite Sr$_2$FeIrO$_6$, respectively. Bulk La$_{0.67}$Sr$_{0.33}$MnO$_3$ is metallic and shows…

Strongly Correlated Electrons · Physics 2019-01-23 K C Kharkwal , Rachna Chaurasia , A K Pramanik

Research on the exchange bias (EB) phenomenon has witnessed a flurry of activity during recent years, which stems from its use in magnetic sensors and as stabilizers in magnetic reading heads. EB was discovered in 1956 but it attracted only…

Materials Science · Physics 2007-05-23 Miguel Kiwi

We report exchange bias (EB) in single-phase CoO nanoparticles, where two magnetic phases naturally emerge as the crystallite size decreases from 34.6 to 10.8 nm. The N\'eel temperature (TN) associated with antiferromagnetic ordering…

Mesoscale and Nanoscale Physics · Physics 2024-04-15 Vikash Sharma , Sudip Pal , Divya Sharma , Dinesh Kumar Shukla , Ram Janay Chaudhary , Gunadhor Singh Okram

Exchange bias is often observed when anti-ferromagnetic and ferromagnetic phases coexist. The coexistence of two competing magnetic phases can persist to the lowest temperatures if the disorder-broadened 1st order transition separating them…

Materials Science · Physics 2015-09-29 Praveen Chaddah

The effect of nonmagnetic metal additives in metallic antiferromagnets (AFMs) on the exchange bias (EB) has been investigated from a structural, magnetic and Monte Carlo simulation point of view in bilayers of CoFe/IrMn:Cu. Dilution by Cu…

This article reports dependence of exchange bias (EB) effect on interparticle interactions in nanocrystalline Co/CoO core/shell structures, synthesized using conventional sol-gel technique. Analysis via powder X-Ray diffraction (PXRD)…

The exchange bias (EB) effect is known as a fundamentally and technologically important magnetic property of a magnetic bilayer film. It is manifested as a horizontal shift in a magnetic hysteresis loop of a film subject to cooling in the…

Exchange bias-like effect observed in the intermetallic compound TbFeAl, which displays a magnetic phase transition at $T^h_c \approx$ 198~K and a second one at $T^l_c \approx$ 154~K, is reported. {\em Jump}-like features are observed in…

Strongly Correlated Electrons · Physics 2016-06-22 Harikrishnan S. Nair , André M. Strydom

The double perovskite compound, Sr$_{2}$YbRuO$_{6}$, displays reversal in the orientation of magnetic moments along with negative magnetization due to an underlying magnetic compensation phenomenon. The exchange bias (EB) field below the…

Materials Science · Physics 2010-11-04 R. P. Singh , C. V. Tomy , A. K. Grover