Journal
PHYSICA B-CONDENSED MATTER
Volume 621, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physb.2021.413315
Keywords
Multiferroic; Ceramics; Magnetic; Dielectric
Categories
Funding
- Physics Department, IIT Bombay
- Materials Engineering Department, IISc Bangalore
- SCNS, JNU-New Delhi
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BiFeO3 is an attractive multiferroic ceramic for device application. The study calculated the magnetoelectric coupling coefficient of single-phase BiFeO3 ceramic using theoretical method instead of direct measurement of voltage. An applied magnetic field raises the capacitance of the pellet of BiFeO3, which gives the values of magnetoelectric coupling coefficient.
BiFeO3 is an attractive multiferroic ceramic for device application. The magnetoelectric coupling coefficient (alpha(E) - 2.2 mV/cm-Oe) of single-phase BiFeO3 ceramic is denominated here, which is calculated by theoretical method (by using the numerical value of capacitance) in place of direct measurement of voltage. An applied magnetic field raises the capacitance of the pellet of BiFeO3 ; analogous change in voltage gives the values of magnetoelectric coupling coefficient. Moreover, using the Ginzburg-Landau theory, the magnetoelectric interaction constant (7) was calculated around - 9.3 x 10(-1), which is numerically two times lower than the magnetoelectric coupling coefficient. This theoretical cum experimental study is very important in the view point of science and devices.
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