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High field magnetism and magnetoacoustics in UCu.sub.0.95./sub.Ge
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SYSNO ASEP 0380459 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title High field magnetism and magnetoacoustics in UCu0.95Ge Author(s) Zvyagin, A.A. (DE)
Yasin, S. (DE)
Skourski, Y. (DE)
Andreev, Alexander V. (FZU-D) RID, ORCID
Zherlitsyn, S. (DE)
Wosnitza, J. (DE)Source Title Journal of Alloys and Compounds. - : Elsevier - ISSN 0925-8388
Roč. 528, JUL (2012), s. 51-57Number of pages 7 s. Language eng - English Country NL - Netherlands Keywords uranium intermetallics ; single crystals ; antiferromagnetism ; high fields ; acoustics ; magnetoelasticity Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GAP204/12/0150 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000302961700009 DOI 10.1016/j.jallcom.2012.03.024 Annotation Magnetic and magneto-acoustic characteristics of UCu0.95Ge with antiferromagnetic ground state have been studied on single crystals in pulsed magnetic fields up to 64 T applied along the main axes. Along the a axis, a first-order phase transition has been observed at 61 T. For the field applied along the c axis, the first-order phase transition occurs at a much lower magnetic field (38 T). In both directions, the magnetization trends to saturate at 1.35 B per formula unit. These field-induced transitions as well as the spontaneous transition at the magnetic ordering at TN = 48 K are accompanied by pronounced anomalies in the sound velocity and sound attenuation. The field-temperature phase diagrams are constructed for both directions of the magnetic field. The results of our theoretical analysis within the framework of the mean-field approximation qualitatively agree with the observed behavior of magnetic and magneto-acoustic characteristics of UCu0.95Ge. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2013
Number of the records: 1