skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Influence of Ga-concentration on the electrical and magnetic properties of magnetoelectric CoGaxFe2–xO4/BaTiO3 composite

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4916114· OSTI ID:1227224
 [1];  [1];  [2];  [1]
  1. Iowa State Univ., Ames, IA (United States)
  2. Iowa State Univ., Ames, IA (United States); Ames Lab., Ames, IA (United States)

Multiferroic materials exhibit magnetoelectric (ME) coupling and promise new device applications including magnetic sensors, generators, and filters. An effective method for developing ME materials with enhanced ME effect is achieved by the coupling through the interfacial strain between piezoelectric and magnetostrictive materials. In this study, the electrical and magnetic properties of Ga doped magnetoelectric CoGaxFe2–xO4/BaTiO3 composite are studied systematically. It is found that Ga doping improves the sensitivity of magnetoelastic response and stabilizes the magnetic phase of the composites. More importantly, Ga doping reduces the electrical conductivity of composite, as well as the dielectric loss. An enhancement of the electrostrain with doping Ga is also observed. Quantitative estimation indicates that magnetoelectric coupling is enhanced for Ga-doped CoGaxFe2–xO4/BaTiO3 composites. As a result, the present work is beneficial to the practical application of composite CoFe2O4/BaTiO3-based multiferroic materials.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1227224
Report Number(s):
IS-J-8614; JAPIAU
Journal Information:
Journal of Applied Physics, Vol. 117, Issue 17; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

References (17)

Multi-ferroic magnetoelectrics journal January 1994
An in situ grown eutectic magnetoelectric composite material: Part 2 Physical properties journal October 1974
Connectivity and piezoelectric-pyroelectric composites journal May 1978
Magnetoelectric effect in composites of piezoelectric and piezomagnetic phases journal September 1994
Fabrication of multiferroic Ba0.7Sr0.3TiO3–Ni0.8Zn0.2Fe2O4 composite nanofibers by electrospinning journal January 2013
Nanoferronics is a winning combination journal April 2012
Current Status of Magnetoelectric Composite Thin/Thick Films journal January 2012
Giant Electric Field Tuning of Magnetic Properties in Multiferroic Ferrite/Ferroelectric Heterostructures journal June 2009
Synthesis and characterization of novel CoFe2O4–BaTiO3 multiferroic core–shell-type nanostructures journal February 2010
Magnetoelectric composites of nickel ferrite and lead zirconnate titanate prepared by spark plasma sintering journal January 2007
Synthesis and characterization of composite MgFe2O4–BaTiO3 multiferroic system journal May 2008
Dependence of magnetomechanical performance of CoGa x Fe 2−x O 4 on temperature variation journal April 2011
Magnetic and magnetoelastic properties of Ga-substituted cobalt ferrite journal May 2007
The dependence of magnetic domain structure upon magnetization state with emphasis upon nucleation as a mechanism for pseudo-single-domain behavior journal January 1983
Temperature dependence of the structural, magnetic, and magnetostrictive properties of zinc-substituted cobalt ferrite journal May 2013
Magnetoelectric effect in crystallographically textured BaTiO3 films deposited on ferromagnetic metallic glass foils journal February 2011
Magnetoelectricity in piezoelectric-magnetostrictive composites journal January 1976

Cited By (1)

Improved magnetostrictive properties of cobalt ferrite (CoFe 2 O 4 ) by Mn and Dy co-substitution for magneto-mechanical sensors journal November 2019