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High-field magnetization and magnetoelasticity of single crystalline HoFe.sub.5./sub.Al.sub.7./sub..
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SYSNO ASEP 0427120 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title High-field magnetization and magnetoelasticity of single crystalline HoFe5Al7. Author(s) Gorbunov, Denis (FZU-D) RID
Yasin, S. (DE)
Andreev, Alexander V. (FZU-D) RID, ORCID
Skourski, Y. (DE)
Arnold, Zdeněk (FZU-D) RID, SAI, ORCID
Zherlitsyn, S. (DE)
Wosnitza, J. (DE)Source Title Journal of Physics-Condensed Matter. - : Institute of Physics Publishing - ISSN 0953-8984
Roč. 26, č. 13 (2014), , "136001-1"-"136001-11"Number of pages 11 s. Language eng - English Country GB - United Kingdom Keywords rare-earth intermetallics ; magnetic anisotropy ; ferrimagnetism ; high magnetic fields ; field-induced transition ; pressure effect Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GAP204/12/0150 GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 UT WOS 000333182900015 EID SCOPUS 84896532775 DOI 10.1088/0953-8984/26/13/136001 Annotation Magnetization and ultrasound measurements are performed in pulsed magnetic fields up to 60 T on a ferrimagnetic HoFe5Al7 single crystal (TC = 216 K, compensation point Tcomp = 65 K) with a tetragonal crystal structure. The compound exhibits a high magnetic anisotropy of the easy-plane type, the easy-magnetization direction is [110] with the spontaneous magnetic moment 2 μB/f at T = 2 K. Along the easy axis, two first-order field-induced magnetic transitions are observed with sharp anomalies in the acoustic properties. Within molecular-field theory and using the high-field magnetization data the Ho-Fe inter-sublattice exchange parameter has been determined to be nHo-Fe = 4 T/μB. The magnetoelasticity has also been probed by magnetization measurements under hydrostatic pressure. TC decreases with a rate −10 K/GPa, whereas Tcomp increases as 3.5 K/GPa. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2015
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