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Author Grigoriev, S. V. ♦ Tarnavich, V. V. ♦ Chetverikov, Yu. O. ♦ Lott, D. ♦ Schreyer, A.
Source SpringerLink
Content type Text
Publisher Pleiades Publishing
File Format PDF
Copyright Year ©2015
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations
Subject Keyword commensurate magnetic structures ♦ multilayer superstructures ♦ spin spiral structure ♦ giant magnetoresistance effect ♦ antiferromagnets ♦ Surfaces and Interfaces, Thin Films
Abstract In zero magnetic field, the magnetic system of a Dy/Y multilayer superstructure represents a spin spiral with a coherence length many times exceeding the Y/Dy bilayer thickness. When the magnetic spiral period does not coincide with the Dy-layer thickness, each structural layer is characterized by an average uncompensated magnetic moment. In an applied magnetic field, magnetic layers tend to order ferromagnetically. Along with ferromagnetic order coaxial to the magnetic field, fourfold commensurate spin structure similar to a spiral and twofold commensurate spin structure similar to antiferromagnetic spin-flop ordering are formed. The fourfold structure is observed at temperatures close to the critical Néel temperature at d $_{S}$ > d $_{Dy}$ (T $_{N}$ = 160 K) in relatively weak magnetic fields. The twofold structure of an antiferromagnet is characteristic of relatively strong fields. This phenomenon is explained in terms of the competition between the Ruderman–Kittel–Kasuya–Yoshida and Zeeman interactions.
ISSN 10274510
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2015-10-16
Publisher Place Moscow
e-ISSN 18197094
Journal Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques
Volume Number 9
Issue Number 5
Page Count 6
Starting Page 974
Ending Page 979

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Source: SpringerLink