Field-induced reentrant magnetoelectric phase in LiNiPO4

Article

关键词: MAGNETIC-FIELDS;    FERROMAGNETISM;    MULTIFERROICS;    POLARIZATION;    MEMORY;   

DOI  :  10.1103/PhysRevB.95.064421

来源: SCIE

【 摘 要 】

Using pulsed magnetic fields up to 30 T we have measured the bulk magnetization and electrical polarization of LiNiPO4 and have studied its magnetic structure by time-of-flight neutron Laue diffraction. Our data establish the existence of a reentrant magnetoelectric phase between 19 T and 21 T. We show that a magnetized version of the zero field commensurate structure explains the magnetoelectric response quantitatively. The stability of this structure suggests a field-dependent spin anisotropy. Above 21 T, amagnetoelectrically inactive, short-wavelength incommensurate structure is identified. Our results demonstrate the combination of pulsed fields with epithermal neutron Laue diffraction as a powerful method to probe even complex phase diagrams in strong magnetic fields.

【 授权许可】

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