Journal
FUNCTIONAL MATERIALS LETTERS
Volume 13, Issue 4, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S179360472050023X
Keywords
Metastable state; relaxation; magnetic ac susceptibility; magnetic losses
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Funding
- Russian Foundation for Basic Research [18-08-01071 A]
- National Research Foundation ofKorea [2020R1A2C1008115]
- National Research Foundation of Korea [2020R1A2C1008115] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Off-stoichiometric (La0.6Sr0.35)(MnTi0.05) MnO3 manganite was studied with in-phase (real, chi') and out-of-phase (imaginary, chi '') components of ac susceptibility measurements. Short- and long-time relaxation effects, manifested by the revealed negative chi '', 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 chi '' is an intrinsic feature of magnetic materials with impurities, defects and vacancies blocking nucleation and growth of new phase.
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