Negative imaginary component of AC magnetic susceptibility, metastable states, and magnetic relaxation in La0.6Sr0.35MnTi0.05O3статья
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Дата последнего поиска статьи во внешних источниках: 21 октября 2020 г.
Аннотация:Off-stoichiometric (La0:6Sr0:35)(MnTi0:05) MnO3 manganite was studied with in-phase (real, χ 0) and out-of-phase (imaginary, χ 00) components of ac susceptibility measurements. Short- and long-time relaxation effects, manifested by the revealed negative χ 00, were observed. The effects are explained at the frame of Landau theory of phase transitions where a coexistence of stable and metastable states is considered. It is supposed that the appearance of negative χ 00 is an intrinsic feature of magnetic materials with impurities, defects and vacancies blocking nucleation and growth of new phase.