Magnetic structure and spin-flop transition in the A-site columnar-ordered quadruple perovskite TmMn3O6

被引：16

作者：

Vibhakar, A. M. ^{[1
]}

Khalyavin, D. D. ^{[2
]}

Manuel, P. ^{[2
]}

Zhang, L. ^{[3
,4
]}

Yamaura, K. ^{[3
,4
]}

Radaelli, P. G. ^{[1
]}

Belik, A. A. ^{[4
]}

Johnson, R. D. ^{[1
]}

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[2] Rutherford Appleton Lab STFC, ISIS Facil, Didcot OX11 OQX, Oxon, England

[3] Hokkaido Univ, Grad Sch Chem Sci & Engn, Kita Ku, North 10 West 8, Sapporo, Hokkaido 0600810, Japan

[4] Natl Inst Mat Sci, Res Ctr Funct Mat, Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan

来源：

PHYSICAL REVIEW B | 2019年 / 99卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

HIGH-PRESSURE; REORIENTATION; CHARGE; MAGNETORESISTANCE; DIFFRACTION;

D O I：

10.1103/PhysRevB.99.104424

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present the magnetic structure of TmMn3O6, solved via neutron powder diffraction. We demonstrate that long-range magnetic order develops below 74 K, and at 28 K a spin-flop transition occurs driven by f-d exchange and rare-earth single-ion anisotropy. In both magnetic phases, the magnetic structure may be described as a collinear ferrimagnet, contrary to conventional theories of magnetic order in the manganite perovskites. Instead, we show that these magnetic structures can be understood to arise due to ferro-orbital order, the A, A', and A '' site point symmetry, mm2, and the dominance of A-B exchange over both A-A and B-B exchange, which together are unique to the RMn3O6 perovskites.

引用

页数：10

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