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Papers by Author: Julia V. Leskova

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The Effect of Hydrostatic Pressure on Crystal and Orbital Structures of LaMnO₃ and LaMn_0.5Ga_0.5O₃

Authors: Liudmila E. Gonchar, Anatoliy E. Nikiforov, Julia V. Leskova, Anton A. Firsin, D.P. Kozlenko

Abstract: The crystal structure of manganite under pressure is investigated. The influence of external hydrostatical pressure is studied. The theoretical study of magnetic interactions and NMR spectra under pressure is carried out. The influence of Ga-doping is discussed.

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Hyperfine Interactions in Half-Doped and 2/3-Doped Charge-Ordering Manganites

Authors: Julia V. Leskova, Anatoliy E. Nikiforov, Liudmila E. Gonchar, Sergey E. Popov, Alexey A. Mozhegorov

Abstract: The present work is devoted to the theoretical interpretation of nuclear magnetic resonance (NMR) spectra on nonmagnetic lanthanum ion in charge-ordered La0.5Ca0.5MnO3 and La0.33Ca0.67MnO3 compounds. It is shown that the anisotropic hyperfine interaction, which arises due to the polarization of lanthanum’s external p-shells, plays a crucial role in spectrum forming. Our model allows to explain experimental spectra. The work is partially supported by CRDF REC-005.

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