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Magnetic phase transition temperature of the PbFe1/2Nb1/2O3 (PFN) nanofilm on the SrTiO3 substrate was reported to be about 50 K higher than that in the bulk samples. We carried out comparative Raman studies of a 90 nm-thick PFN epitaxial film on SrRuO3-buffered (001) SrTiO3 substrate and the bulk samples of ceramic PFN and a single crystal. It was found out that the bands at ≈250 cm−1 and ≈700 cm...
In the present study we diluted either A- or B- sublattice of perovskite multiferroic PbFe0.5Nb0.5O3 (PFN) and studied the change of the magnetic and ferroelectric phase transition temperatures caused by such dilution. A-site substitutions (Ba, Ca) lead to the smearing of the permittivity-temperature maximum and lower its temperature Tm. Addition of Ti to PFN increases Tm, decreases the diffusion...
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