Evidence of magnetoelectric coupling in 0.9BiFeO3-0.1Ba[Ti0.95(Yb0.5Nb0.5)0.05]O3 ceramic
Source abstract
Abstract
Abstract The physical properties of the Multiferroic lead-free 0.9BiFeO3-0.1Ba[Ti0.95(Yb0.5Nb0.5)0.05]O3 ceramic were investigated by in-situ Mossbauer spectroscopy, X-ray diffraction (XRD), dielectric measurements and Raman scattering. Both BiFeO3 and 0.9BiFeO3-0.1Ba[Ti0.95(Yb0.5Nb0.5)0.05]O3 ceramics underwent in-situ Mossbauer spectroscopy in the temperature range of 300 K to 653 K and the parameters of hyperfine interactions were determined. The magnetic transition temperature TN of our doped sample was of 568 K, which was lower than that of BiFeO3. This reduction of TN originated from the presence of different exchange constants resulting from the weakening of JFe-Fe. The deviation of the reduced magnetic hyperfine field H(T)/H(0) as a function of the reduced temperature T/TN from the Brillouin curve of Fe3+ (S = 5/2) for the three sextets and the determination of the critical exponent β, of 0.375 ± 0.022 in the range of 0.01
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Dielectric properties of ceramics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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