Field-induced phases in HoMnO3 at low temperatures -: art. no. 014438

被引:87
|
作者
Lorenz, B [1 ]
Yen, F
Gospodinov, MM
Chu, CW
机构
[1] Univ Houston, Dept Phys, Houston, TX 77204 USA
[2] Univ Houston, TCSUH, Houston, TX 77204 USA
[3] Bulgarian Acad Sci, Inst Solid State Phys, BU-1784 Sofia, Bulgaria
[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[5] Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China
关键词
D O I
10.1103/PhysRevB.71.014438
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The field-induced re-entrant phase in multiferroic hexagonal HoMnO3 is investigated to lower temperatures by dc magnetization, ac susceptibility, and specific heat measurements at various magnetic fields. Two new phases have been unambiguously identified below the Neel transition temperature, T-N=76 K, for magnetic fields up to 50 kOe. The existence of an intermediate phase between the P (6) under bar (3)(c) under barm and P (6) under bar (3)c (m) under bar magnetic structures (previously predicted from dielectric measurements) was confirmed and the magnetic properties of this phase have been investigated. At low temperatures (T<5 K) a dome shaped phase boundary characterized by a magnetization jump and a narrow heat capacity peak was detected between the magnetic fields of 5 kOe and 18 kOe. The transition across this phase boundary is of first order and the magnetization and entropy jumps obey the magnetic analogue of the Clausius-Clapeyron relation. Four of the five low-temperature phases coexist at a tetracritical point at 2 K and 18 kOe. The complex magnetic phase diagram so derived provides an informative basis for unraveling the underlying driving forces for the occurrence of the various phases and the coupling between the different orders.
引用
收藏
页数:9
相关论文
共 50 条
  • [41] Field-induced transition in the specific heat of CeIrIn5 for B≥30 T -: art. no. 174520
    Kim, JS
    Alwood, J
    Kumar, P
    Stewart, GR
    PHYSICAL REVIEW B, 2002, 65 (17) : 1 - 4
  • [42] Specific heat study of the field-induced magnetic ordering in the spin-gap system TlCuCl3 -: art. no. 134416
    Oosawa, A
    Katori, HA
    Tanaka, H
    PHYSICAL REVIEW B, 2001, 63 (13):
  • [43] Field-induced structural evolution in the spin-Peierls compound CuGeO3:: High-field ESR study -: art. no. 212403
    Zvyagin, SA
    Krzystek, J
    van Loosdrecht, PHM
    Dhalenne, G
    Revcolevschi, A
    PHYSICAL REVIEW B, 2003, 67 (21):
  • [44] FIELD-INDUCED SWITCHING OF TETRAGONAL DOMAINS IN SRTIO3 AT LOW-TEMPERATURES
    PIETRASS, B
    PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1972, 9 (01): : K39 - &
  • [45] Field-induced non-Fermi-liquid behavior in Ce2IrIn8 -: art. no. 024402
    Kim, JS
    Moreno, NO
    Sarrao, JL
    Thompson, JD
    Stewart, GR
    PHYSICAL REVIEW B, 2004, 69 (02)
  • [46] Field-induced suppression of the heavy-fermion state in YbRh2Si2 -: art. no. 226402
    Tokiwa, Y
    Gegenwart, P
    Radu, T
    Ferstl, J
    Sparn, G
    Geibel, C
    Steglich, F
    PHYSICAL REVIEW LETTERS, 2005, 94 (22)
  • [47] Field-induced transition in the S=1 antiferromagnetic chain with single-ion anisotropy in a transverse magnetic field -: art. no. 054419
    Xing, HZ
    Su, G
    Gao, S
    Chu, JH
    PHYSICAL REVIEW B, 2002, 66 (05) : 1 - 7
  • [48] High magnetic field investigation of the field-induced transition in the Nd2Fe17Hx compounds -: art. no. 033912
    Isnard, O
    Guillot, M
    JOURNAL OF APPLIED PHYSICS, 2005, 98 (03)
  • [49] Ce3+ luminescence in a LiBaF3 single crystal at low temperatures -: art. no. 184101
    Nikl, M
    Mihóková, E
    Málková, Z
    Vedda, A
    Martini, M
    Shimamura, K
    Fukuda, T
    PHYSICAL REVIEW B, 2002, 66 (18):
  • [50] Magnetization process of single molecule magnets at low temperatures -: art. no. 047202
    Fernández, JF
    Alonso, JJ
    PHYSICAL REVIEW LETTERS, 2003, 91 (04)