Room-temperature magnetoelectric coupling in single-phase BaTiO{sub 3}-BiFeO{sub 3} system

Journal Article · Sun Apr 14 00:00:00 EDT 2013 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4799591· OSTI ID:22102346

Yang, Su-Chul; Kumar, Ashok; Priya, Shashank ^[1]; Petkov, Valeri ^[2]

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1. Center for Energy Harvesting Materials and Systems (CEHMS), Bio-inspired Materials and Devices Laboratory (BMDL), Virginia Tech, Blacksburg, Virginia 24061 (United States)
2. Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859 (United States)

In this paper, single-phase multiferroic ceramics of (1 - x) BaTiO{sub 3}-x BiFeO{sub 3} (BT - x BFO) were synthesized by solid-solution method in the wide range of material composition (x = 0.025 - 1.0). The changes in crystal structure were confirmed via X-ray diffractions (XRD) and atomic pair distribution functions (PDFs). The room-temperature ME coupling was found to exhibit significant magnitude in the narrow composition window (x = 0.71 - 0.8) where the average crystal structure was found to be rhombohedral. Especially, the BT - 0.725 BFO ceramics containing local monoclinic distortions within rhombohedral phase were found to exhibit high room-temperature ME coefficient ({alpha}{sub ME}) of 0.87 mV/cm{center_dot}Oe with high piezoelectric properties (g{sub 33} = 18.5 Multiplication-Sign 10 mV m N{sup -1} and d{sub 33} = 124 pC N{sup -1}). We believe that the high room-temperature ME coupling in single-phase lead-free BT-BFO ceramics provides a possibility of developing electrically or magnetically tunable thin-film devices.

• OSTI ID: 22102346
• Journal Information: Journal of Applied Physics, Vol. 113, Issue 14; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
COUPLING
DISTRIBUTION FUNCTIONS
ELECTRICAL PROPERTIES
FERRITES
MAGNETIC PROPERTIES
MONOCLINIC LATTICES
PIEZOELECTRICITY
SOLID SOLUTIONS
TEMPERATURE RANGE 0273-0400 K
THIN FILMS
TITANATES
TRIGONAL LATTICES
X-RAY DIFFRACTION