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Hyperfine interactions in the Bi1−xLaxFeO3 ferrites (x = 0.0225, 0.075, 0.9)

by Salamatin, A. V , Makarova, A. O , Velichkov, A , Grozdov, D. S , Pokatilov, V. S , Vergel, K. N , Mikhin, M. V , Sigov, A. S , Budzynski, M , Salamatin, D. A , Bokov, A. V , Tsvyashchenko, A. V

in Anharmonicity / Ferrites / Iron 57 / Magnetic anisotropy / Magnetic fields / Mossbauer spectroscopy / Nuclei / Quadrupoles

2021

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Hyperfine interactions in the Bi1−xLaxFeO3 ferrites (x = 0.0225, 0.075, 0.9)

by Salamatin, A. V , Makarova, A. O , Velichkov, A , Grozdov, D. S , Pokatilov, V. S , Vergel, K. N , Mikhin, M. V , Sigov, A. S , Budzynski, M , Salamatin, D. A , Bokov, A. V , Tsvyashchenko, A. V

in Anharmonicity / Ferrites / Iron 57 / Magnetic anisotropy / Magnetic fields / Mossbauer spectroscopy / Nuclei / Quadrupoles

2021

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Hyperfine interactions in the Bi1−xLaxFeO3 ferrites (x = 0.0225, 0.075, 0.9)

by Salamatin, A. V , Makarova, A. O , Velichkov, A , Grozdov, D. S , Pokatilov, V. S , Vergel, K. N , Mikhin, M. V , Sigov, A. S , Budzynski, M , Salamatin, D. A , Bokov, A. V , Tsvyashchenko, A. V

in Anharmonicity / Ferrites / Iron 57 / Magnetic anisotropy / Magnetic fields / Mossbauer spectroscopy / Nuclei / Quadrupoles

2021

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Journal Article

Hyperfine interactions in the Bi1−xLaxFeO3 ferrites (x = 0.0225, 0.075, 0.9)

Salamatin, A. V,

Makarova, A. O,

Velichkov, A,

Grozdov, D. S,

Pokatilov, V. S,

Vergel, K. N,

Mikhin, M. V,

Sigov, A. S,

Budzynski, M,

Salamatin, D. A,

Bokov, A. V,

Tsvyashchenko, A. V

2021

Overview

Hyperfine interactions in the Bi1−xLaxFeO3 ferrites (where x = 0.0225, 0.075, 0.9) have been studied by means of 57Fe Mössbauer spectroscopy and 140Ce time differential perturbed angular γ–γ correlation methods. The information about the line shift δ, the lattice εlat and the magnetic εmag contributions to the quadrupole shift ε, isotropic His and anisotropic Han contributions to the hyperfine magnetic field Hhf on 57Fe nuclei, anharmonicity parameter m, distribution of the hyperfine magnetic field p(Hhf), and supertransferred hyperfine magnetic fields on 140Ce probe nuclei were obtained. In all studied compounds, the Fe ions are in a high-spin trivalent state. In the compounds with x = 0.0225 and 0.075 spatially modulated cycloidal magnetic structures exist. It was found that the sign of the effective constant of magnetic anisotropy Keff changes with the variation of x from 0.0225 to 0.075. The substitution of Bi by La increases the value of the hyperfine magnetic field on 57Fe nuclei from 494 kOe in Bi0.9775La0.0225FeO3 to 520 kOe in Bi0.1La0.9FeO3, i.e. by 26 kOe, while the corresponding supertransferred hyperfine magnetic field on 140Ce probe nuclei decreases.

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Publisher

Springer Nature B.V

Subject

Anharmonicity

/ Ferrites

/ Iron 57

/ Magnetic anisotropy

/ Magnetic fields

/ Mossbauer spectroscopy

/ Nuclei