Open AccessMössbauer and magnetization studies of magnetic phase transitions in 0.5BiFeO3–0.5NaNbO3 and 0.5LaFeO3–0.5NaNbO3 solid solutions
Author(s) -
S. I. Raevskaya,
С. П. Кубрин,
Jian Zhuang,
I. P. Raevski,
M. A. Malitskaya,
I. N. Zakharchenko,
M. S. Panchelyuga,
В. В. Титов
Publication year - 2020
Publication title -
journal of advanced dielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.38
H-Index - 13
eISSN - 2010-135X
pISSN - 2010-1368
DOI - 10.1142/s2010135x2060005x
Subject(s) - superexchange , magnetization , solid solution , mössbauer spectroscopy , ion , condensed matter physics , phase (matter) , phase transition , physics , materials science , crystallography , mössbauer effect , thermodynamics , chemistry , quantum mechanics , magnetic field , metallurgy
0.5[Formula: see text]FeO 3 –0.5NaNbO 3 ([Formula: see text], La) solid solution compositions were prepared using a solid phase reaction route from high-purity starting oxides. Mössbauer studies have shown that while for 0.5BiFeO 3 –0.5NaNbO 3 the magnetic phase transition temperature [Formula: see text] value is about 150[Formula: see text]K, for 0.5LaFeO 3 –0.5NaNbO 3 , it is only [Formula: see text][Formula: see text]K. This dramatic difference in [Formula: see text] values seems to be due to additional contribution of the magnetic superexchange between [Formula: see text] ions via the empty 6p-states of [Formula: see text] ions to the overall superexchange.