3:1 magnetization plateau and suppression of ferroelectric polarization in an Ising chain multiferroic

被引：47

作者：

Jo, Y. J. ^{[1
]}

Lee, Seongsu ^{[2
,3
]}

Choi, E. S. ^{[1
]}

Yi, H. T. ^{[2
,3
]}

Ratcliff, W., II ^{[4
]}

Choi, Y. J. ^{[2
,3
]}

Kiryukhin, V. ^{[2
,3
]}

Cheong, S. W. ^{[2
,3
]}

Balicas, L. ^{[1
]}

机构：

[1] Florida State Univ, Nat High Magnet Field Lab, Tallahassee, FL 32310 USA

[2] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[3] Rutgers State Univ, Rutgers Ctr Emergent Mat, Piscataway, NJ 08854 USA

[4] Natl Inst Stand & Technol, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 01期

关键词：

calcium compounds; cobalt compounds; dielectric polarisation; ferroelectric materials; ferroelectric transitions; frustration; Ising model; magnetic structure; magnetic transitions; magnetisation; metamagnetism; multiferroics; neutron diffraction; superexchange interactions;

D O I：

10.1103/PhysRevB.79.012407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ferroelectric Ising chain magnet Ca3Co2-xMnxO6 (x similar or equal to 0.96) was studied in magnetic fields of up to 33 T. Magnetization and neutron-scattering measurements reveal successive metamagnetic transitions from the zero-field up arrow up arrow down arrow down arrow spin configuration to the up arrow up arrow up arrow down arrow state with a broad magnetization plateau, and then to the up arrow up arrow up arrow up arrow state. The absence of hysteresis in these plateaus reveals an intriguing coupling between the intrachain state and the three-dimensional geometrically frustrated magnetic system. Inversion symmetry, broken in the up arrow up arrow down arrow down arrow state, is restored in the up arrow up arrow up arrow down arrow state, leading to the complete suppression of the electric polarization driven by symmetric superexchange.

引用

页数：4

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