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Magnetic peculiarity and crystal structure of Pr 0.5 Sr 0.5 Co 1− x Fe x O 3
Author(s) -
Karpinsky D. V.,
Troyanchuk I. O.,
Chobot G. M.,
Efimov V. V.,
Prokhnenko O.,
Sikolenko V.
Publication year - 2010
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200945283
Subject(s) - triclinic crystal system , orthorhombic crystal system , antiferromagnetism , crystal structure , monoclinic crystal system , crystallography , condensed matter physics , ferromagnetism , materials science , spin glass , magnetic structure , crystal (programming language) , magnetic susceptibility , chemistry , magnetization , physics , magnetic field , quantum mechanics , computer science , programming language
Crystal structure and magnetic properties of the Pr 0.5 Sr 0.5 Co 1− x Fe x O 3− d are studied to clarify an origin of the magnetic peculiarity observed for Pr 0.5 Sr 0.5 CoO 3− d compound near T A ≈ 120 K. A correlation between crystal symmetry, magnetic structure, and the magnetic anomaly is discussed. At room temperature the compounds with x < 0.67 have orthorhombic crystal structure described by Imma space group. Crystal symmetry of these compounds reduces down to monoclinic (triclinic) one with a temperature decrease, whereas the crystal structure of the solid solutions with x > 0.7 remains orthorhombic at low temperatures. Increase of Fe percentage changes the magnetic properties of the compounds from ferromagnetic to cluster spin‐glass, spin glass and then to antiferromagnetic one. An existence of the magnetic feature is strongly dependent on the magnetic state of the compounds. The data obtained specify that a rearrangement of the bond lengths in rare‐earth sublattice is responsible for the crystal structure modification and thus for the magnetic anomaly.