Počet záznamů: 1  

High field magnetism and magnetoacoustics in UCu.sub.0.95./sub.Ge

  1. 1.
    0380459 - FZU-D 2013 RIV NL eng J - Článek v odborném periodiku
    Zvyagin, A.A. - Yasin, S. - Skourski, Y. - Andreev, Alexander V. - Zherlitsyn, S. - Wosnitza, J.
    High field magnetism and magnetoacoustics in UCu0.95Ge.
    Journal of Alloys and Compounds. Roč. 528, JUL (2012), s. 51-57. ISSN 0925-8388
    Grant CEP: GA ČR GAP204/12/0150
    Grant ostatní:EuroMagNET(XE) 228043
    Výzkumný záměr: CEZ:AV0Z10100520
    Klíčová slova: uranium intermetallics * single crystals * antiferromagnetism * high fields * acoustics * magnetoelasticity
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 2.390, rok: 2012

    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.
    Trvalý link: http://hdl.handle.net/11104/0211167