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Title: Enhancement of the magnetocapacitance effect in an external electric field in La{sub x}Bi{sub 1-x}FeO{sub 3} films

The goal of the study is to determine the value of magnetocapacitance under the substitution of lanthanum for bismuth in thin La{sub x}Bi{sub 1-x}FeO{sub 3} films and to find out the effect of an external bias electric field on the magnetocapacitance effect. To solve this task, the dielectric permittivity, the magnetic permeability, and the loss tangent are measured in La{sub x}Bi{sub 1-x}FeO{sub 3} films in magnetic fields of up to 8 kOe in the range of temperatures 100 K < T < 1000 K. Maxima of the permittivity and permeability at low temperatures and the dependence of the permeability on the prehistory of a sample are found. An increase in the magnetocapacitance due to the substitution of lanthanum for bismuth is observed. A giant enhancement of magnetocapacitance in an external electric bias field is revealed. These phenomena are attributed to the rearrangement of the domain structure.
Authors:
;  [1] ; ;  [2]
  1. Reshetnikov Siberian State Aerospace University (Russian Federation)
  2. National Academy of Sciences of Belarus, Scientific and Practical Materials Research Center (Belarus)
Publication Date:
OSTI Identifier:
22472080
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 121; Journal Issue: 3; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BISMUTH COMPOUNDS; DIELECTRIC MATERIALS; DOMAIN STRUCTURE; ELECTRIC FIELDS; FERRITES; LANTHANUM COMPOUNDS; MAGNETIC FIELDS; MAGNETIC SUSCEPTIBILITY; PERMEABILITY; PERMITTIVITY; TEMPERATURE DEPENDENCE; THIN FILMS