Počet záznamů: 1

Pressure-induced changes in the structural and magnetic properties of YFe.sub.2./sub.D.sub.4.2./sub..

  1. 1.
    0366059 - FZU-D 2012 RIV US eng J - Článek v odborném periodiku
    Isnard, O. - Paul-Boncour, V. - Arnold, Zdeněk - Colin, C.V. - Leblond, T. - Kamarád, Jiří - Sugiura, H.
    Pressure-induced changes in the structural and magnetic properties of YFe2D4.2.
    Physical Review. B. Roč. 84, č. 9 (2011), 094429/1-094429/10 ISSN 1098-0121
    Grant CEP: GA ČR GA202/09/1027; GA ČR GA202/09/0030
    Výzkumný záměr: CEZ:AV0Z10100521
    Klíčová slova: glass transitions of specific systems * X-ray diffraction * saturation moments * magnetic susceptibilities
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.691, rok: 2011

    The study of the structural and magnetic properties of YFe2D4.2 under high pressure has been performed by combining energy dispersive x-ray diffraction at room temperature up to 5.5 GPa, neutron diffraction studies at low temperature up to 2.5 GPa, and magnetization measurements up to 1 GPa. The monoclinic structure of YFe2D4.2 at ambient temperature and pressure is related to a distortion of the initial cubic C15 structure ofYFe2 by the ordering of inserted D atoms. A structural transition from monoclinic to cubic structure is observed at 4 GPa. The high pressure cubic YFe2D4.2 has a 19% higher cell volume than that of YFe2. The application of an external pressure leads to the progressive decrease of the transition temperature TM0 from ferro to antiferromagnetic order (TM0 = 84 K at ambient pressure) and even to the suppression of the ferromagnetic ground state for pressures larger than 0.54 GPa.
    Trvalý link: http://hdl.handle.net/11104/0201152