Magnetoelectric effect in cobalt ferrite–barium titanate composites and their electrical properties

Pramana

S A Patil¹  S C Chaudhari¹  M B Kothale¹  R P Mahajan¹  K K Patankar¹  V L Mathe1¹ 

[1] Department of Physics, Shivaji University, Kolhapur 416 004, India$$

关键词: X-ray diffraction;    CoFe2O4–BaTiO3;    dielectric constant;    ac conductivity;    hopping model;    magnetoelectric effect.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

CoFe2O4–BaTiO3 composites were prepared using conventional ceramic double sintering process with various compositions. Presence of two phases in the composites was confirmed using X-ray diffraction. The dc resistivity and thermoemf as a function of temperature in the temperature range 300 K to 600 K were measured. Variation of dielectric constant (𝜖') with frequency in the range 100 Hz to 1 MHz and also with temperature at a fixed frequency of 1 kHz was studied. The ac conductivity was derived from dielectric constant (𝜖') and loss tangent (tan 𝛿). The nature of conduction is discussed on the basis of small polaron hopping model. The static value of magnetoelectric conversion factor has been studied as a function of magnetic field.

【 授权许可】

Unknown