Pressure-induced polarization reversal in multiferroic YMn2O5

被引：33
作者：
Chaudhury, Rajit P. [1 ,2 ]
dela Cruz, Clarina R. [3 ,4 ]
Lorenz, Bernd [1 ,2 ]
Sun, Yanyi [1 ,2 ]
Chu, Ching-Wu [1 ,2 ,5 ,6 ]
Park, S. [7 ,8 ]
Cheong, Sang-W. [7 ,8 ]
机构：
[1] Univ Houston, Dept Phys, Houston, TX 77204 USA
[2] Univ Houston, TCSUH, Houston, TX 77204 USA
[3] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
[4] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[5] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[6] Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China
[7] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA
[8] Rutgers State Univ, Rutgers Ctr Emergent Mat, Piscataway, NJ 08854 USA
来源：
PHYSICAL REVIEW B | 2008年 / 77卷 / 22期
关键词：
D O I：
10.1103/PhysRevB.77.220104
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The low-temperature ferroelectric polarization of multiferroic YMn2O5 is completely reversed at a critical pressure of 10 kbar and the phase transition from the incommensurate to the commensurate magnetic phase is induced by pressures above 14 kbar. The high-pressure data correlate with thermal-expansion measurements, indicating a significant lattice strain at the low-temperature transition into the incommensurate phase. The results support the exchange striction model for the ferroelectricity in multiferroic RMn2O5 compounds and they show the importance of magnetic frustration as well as the spin-lattice coupling.
引用
收藏
页数：4
相关论文
共 30 条
  • [1] [Anonymous], NAT MAT
  • [2] Spin structure and magnetic frustration in multiferroic RMn2O5 (R=Tb,Ho,Dy) -: art. no. 214402
    Blake, GR
    Chapon, LC
    Radaelli, PG
    Park, S
    Hur, N
    Cheong, SW
    Rodríguez-Carvajal, J
    [J]. PHYSICAL REVIEW B, 2005, 71 (21)
  • [3] Ferroelectricity induced by acentric spin-density waves in YMn2O5
    Chapon, LC
    Radaelli, PG
    Blake, GR
    Park, S
    Cheong, SW
    [J]. PHYSICAL REVIEW LETTERS, 2006, 96 (09)
  • [4] CHAUDHURY RP, UNPUB
  • [5] Pressure-induced enhancement of ferroelectricity in multiferroic RMn2O5 (R=Tb,Dy,Ho)
    dela Cruz, C. R.
    Lorenz, B.
    Sun, Y. Y.
    Wang, Y.
    Park, S.
    Cheong, S-W.
    Gospodinov, M. M.
    Chu, C. W.
    [J]. PHYSICAL REVIEW B, 2007, 76 (17)
  • [6] Magnetoelastic effects and the magnetic phase diagram of multiferroic DyMn2O5
    dela Cruz, C. R.
    Lorenz, B.
    Sun, Y. Y.
    Chu, C. W.
    Park, S.
    Cheong, S. -W.
    [J]. PHYSICAL REVIEW B, 2006, 74 (18):
  • [7] Restoration of ferroelectricity by pressure in multiferroic HoMn2O5
    dela Cruz, C. R.
    Lorenz, B.
    Gospodinov, M. M.
    Chu, C. W.
    [J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 310 (02) : 1185 - 1186
  • [8] Structural anomalies at the magnetic and ferroelectric transitions in RMn2O5 (R=Tb,Dy,Ho)
    dela Cruz, CR
    Yen, F
    Lorenz, B
    Gospodinov, MM
    Chu, CW
    Ratcliff, W
    Lynn, JW
    Park, S
    Cheong, SW
    [J]. PHYSICAL REVIEW B, 2006, 73 (10)
  • [9] Multiferroic and magnetoelectric materials
    Eerenstein, W.
    Mathur, N. D.
    Scott, J. F.
    [J]. NATURE, 2006, 442 (7104) : 759 - 765
  • [10] Revival of the magnetoelectric effect
    Fiebig, M
    [J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2005, 38 (08) : R123 - R152
123