Mössbauer Study of the Effect of Cation Substitutions on the Magnetic Phase Transitions in BiFe1 – xCrxO3 and (1 – x)BiFeO3–xPbFe0.5Sb0.5O3 Solid Solutions
— The concentration dependences of the magnetic phase transition temperature T N , determined based on the changes in Mössbauer spectra, were investigated for a BiFeO 3 solid solution with ordered perovskite PbFe 0.5 Sb 0.5 O 3 and for a disordered BiFe 1 – x Cr x O 3 solid solution. It is establi...
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Veröffentlicht in: | Crystallography reports 2020-05, Vol.65 (3), p.338-342 |
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Hauptverfasser: | , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | —
The concentration dependences of the magnetic phase transition temperature
T
N
, determined based on the changes in Mössbauer spectra, were investigated for a BiFeO
3
solid solution with ordered perovskite PbFe
0.5
Sb
0.5
O
3
and for a disordered BiFe
1 –
x
Cr
x
O
3
solid solution. It is established that the magnetic-order type in BiFe
1 –
x
Cr
x
O
3
changes from antiferromagnetic to spin-glass at a higher degree of Fe-sublattice dilution in comparison with the PbFe
0.5
Nb
0.5
O
3
-based solid solutions presumably because of the smaller BiFeO
3
lattice parameter. Due to the local ordering of Fe
3+
and Sb
5+
ions, the
T
N
value decreases more rapidly (as compared to BiFe
1 –
x
Cr
x
O
3
) with a decrease in the Fe
3+
content in the lattice of (1 –
x
)BiFeO
3
–
x
PbFe
0.5
Sb
0.5
O
3
solid solutions. |
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ISSN: | 1063-7745 1562-689X |
DOI: | 10.1134/S1063774520030165 |