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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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