Observation of Magnetic-Field-Induced Electric Polarization in Terbium Orthoferrite

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

In TbFeO3 orthoferrite at temperatures below the antiferromagnetic ordering temperature for the terbium subsystem (∼3.2 K), the electric polarization Pa(Hb) induced by a magnetic field Hb along the a axis is found. Such polarization is accompanied by anomalies related to metamagnetic (for Tb) and spin-reorientation (for Fe) transitions. At low magnetic fields |H| < Hcr1 ∼ 5 kOe, the Pa(Hb) dependence exhibits a strong hysteresis and has a “butterfly” shape, while in intermediate-field magnetic configurations, |Hcr1| < |H| < |Hcr2| ~ 18 kOe, the sign of the polarization is determined by the sign of an applied electric field, and the Pa(Hb) dependence turns out to be nonmonotonic. A qualitative explanation of the observed effects is given in the framework of a symmetry analysis of the allowed magnetoelectric interactions in the field-induced magnetic structures.

Авторлар туралы

V. Ivanov

Prokhorov General Physics Institute, Russian Academy of Sciences

Email: mukhin@ran.gpi.ru
119991, Moscow, Russia

A. Kuz'menko

Prokhorov General Physics Institute, Russian Academy of Sciences

Email: mukhin@ran.gpi.ru
119991, Moscow, Russia

A. Tikhanovskiy

Prokhorov General Physics Institute, Russian Academy of Sciences

Email: mukhin@ran.gpi.ru
119991, Moscow, Russia

A. Pronin

Prokhorov General Physics Institute, Russian Academy of Sciences

Email: mukhin@ran.gpi.ru
119991, Moscow, Russia

A. Mukhin

Prokhorov General Physics Institute, Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: mukhin@ran.gpi.ru
119991, Moscow, Russia

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