The Biaxial Strain Dependence of Magnetic Order in Spin Frustrated Mn3NiN Thin Films

被引:26
作者
Boldrin, David [1 ]
Johnson, Freya [1 ]
Thompson, Ryan [1 ]
Mihai, Andrei P. [2 ]
Zou, Bin [2 ]
Zemen, Jan [3 ]
Griffiths, Jack [1 ]
Gubeljak, Patrik [1 ]
Ormandy, Kristian L. [1 ]
Manuel, Pascal [4 ]
Khalyavin, Dmitry D. [4 ]
Ouladdiaf, Bachir [5 ]
Qureshi, Navid [5 ]
Petrov, Peter [2 ]
Branford, Will [1 ]
Cohen, Lesley F. [1 ]
机构
[1] Imperial Coll London, Dept Phys, London SW7 2AZ, England
[2] Imperial Coll London, Dept Mat, London SW7 2AZ, England
[3] Czech Tech Univ, Fac Elect Engn, Tech 2, Prague 16627, Czech Republic
[4] STFC Rutherford Appleton Lab, ISIS Facil, Harwell Sci & Innovat Campus, Didcot OX11 0QX, Oxon, England
[5] Inst Laue Langevin, 71 Ave Martyrs,CS 20156, F-38042 Grenoble 9, France
基金
英国工程与自然科学研究理事会;
关键词
antiferromagnet; antiperovskite; frustration; piezomagnetism; spintronics; NONCOLLINEAR ANTIFERROMAGNET; TEMPERATURE COEFFICIENT; RESISTIVITY;
D O I
10.1002/adfm.201902502
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Multicomponent magnetic phase diagrams are a key property of functional materials for a variety of uses, such as manipulation of magnetization for energy efficient memory, data storage, and cooling applications. Strong spin-lattice coupling extends this functionality further by allowing electric-field-control of magnetization via strain coupling with a piezoelectric. Here this work explores the magnetic phase diagram of piezomagnetic Mn3NiN thin films, with a frustrated noncollinear antiferromagnetic (AFM) structure, as a function of the growth induced biaxial strain. Under compressive strain, the films support a canted AFM state with large coercivity of the transverse anomalous Hall resistivity, rho(xy), at low temperature, that transforms at a well-defined Neel transition temperature (T-N) into a soft ferrimagnetic-like (FIM) state at high temperatures. In stark contrast, under tensile strain, the low temperature canted AFM phase transitions to a state where rho(xy) is an order of magnitude smaller and therefore consistent with a low magnetization phase. Neutron scattering confirms that the high temperature FIM-like phase of compressively strained films is magnetically ordered and the transition at T-N is first-order. The results open the field toward future exploration of electric-field-driven piezospintronic and thin film caloric cooling applications in both Mn3NiN itself and the broader Mn(3)AN family.
引用
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页数:6
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