Journal ArticleDOI
New Magnetic Anisotropy
W. H. Meiklejohn,C. P. Bean +1 more
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In this article, a new type of magnetic anisotropy was discovered which is best described as an exchange anisotropic, which is the result of an interaction between an antiferromagnetic material and a ferromagnetic materials.Abstract:
A new type of magnetic anisotropy has been discovered which is best described as an exchange anisotropy. This anisotropy is the result of an interaction between an antiferromagnetic material and a ferromagnetic material. The material that exhibits this exchange anisotropy is a compact of fine particles of cobalt with a cobaltous oxide shell. The effect occurs only below the N\'eel temperature of the antiferromagnetic material, which is essentially room temperature for the cobaltous oxide. An exchange torque is inferred to exist between the metal and oxide which has a maximum value at 77\ifmmode^\circ\else\textdegree\fi{}K of \ensuremath{\sim}2 dyne-cm/${\mathrm{cm}}^{2}$ of interface.read more
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Exchange anisotropy — a review
Ami E. Berkowitz,Kentaro Takano +1 more
TL;DR: In this article, the unidirectional anisotropy of a ferromagnetic bilayer coupled to an antiferromagnetic film was studied. But the authors focused on the unideal anismotropy produced by the exchange bias field produced by a metal and an oxide bilayer.
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Electric-field control of local ferromagnetism using a magnetoelectric multiferroic
Ying-Hao Chu,Lane W. Martin,Lane W. Martin,Mikel B. Holcomb,Mikel B. Holcomb,M. Gajek,Shu-Jen Han,Qing He,Nina Balke,Chan-Ho Yang,Donkoun Lee,Wei Hu,Qian Zhan,P. L. Yang,Arantxa Fraile-Rodríguez,Andreas Scholl,Shan X. Wang,Ramamoorthy Ramesh,Ramamoorthy Ramesh +18 more
TL;DR: A one-to-one mapping of the ferroelectric and ferromagnetic domains is discovered, mediated by the colinear coupling between the magnetization in the ferromagnet and the projection of the antiferromagnetic order in the multiferroic.
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Superparamagnetic Colloids: Controlled Synthesis and Niche Applications**
TL;DR: A comprehensive review of superparamagnetic colloid research can be found in this article, with a focus on those systems that can be prepared as monodisperse samples and in relatively large quantities.
Journal ArticleDOI
Magnetization switching by spin–orbit torque in an antiferromagnet–ferromagnet bilayer system
TL;DR: The AFM/FM system is shown to be a promising building block for SOT devices as well as providing an attractive pathway towards neuromorphic computing.
Journal ArticleDOI
Interface-induced phenomena in magnetism
Frances Hellman,Axel Hoffmann,Yaroslav Tserkovnyak,Geoffrey S. D. Beach,Eric E. Fullerton,Chris Leighton,Allan H. MacDonald,Daniel C. Ralph,Dario Arena,Hermann A. Dürr,Peter Fischer,Julie Grollier,Joseph P. Heremans,Tomas Jungwirth,Tomas Jungwirth,Alexey Kimel,B Bert Koopmans,Ilya Krivorotov,Steven J. May,Amanda K. Petford-Long,James M. Rondinelli,Nitin Samarth,Ivan K. Schuller,Ivan K. Schuller,Andrei Slavin,Mark D. Stiles,Oleg Tchernyshyov,André Thiaville,Barry L. Zink +28 more
TL;DR: This article reviews static and dynamic interfacial effects in magnetism, focusing on interfacially-driven magnetic effects and phenomena associated with spin-orbit coupling and intrinsic symmetry breaking at interfaces, identifying the most exciting new scientific results and pointing to promising future research directions.