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Exchange bias associated with phase separation in the Nd₂/₃Ca₁/₃MnO₃ manganite
Репозиторій DSpace/Manakin
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Exchange bias associated with phase separation in the Nd₂/₃Ca₁/₃MnO₃ manganite
Тема:
К восьмидесятилетию антиферромагнетизма ІІ. Эксперимент
Інший ID:
PACS 75.47.Lx, 71.70.Gm, 79.60.Jv, 75.60.Ej
Посилання:
Exchange bias associated with phase separation in the Nd₂/₃Ca₁/₃MnO₃ manganite / E. Fertman, S. Dolya, V. Desnenko, M. Kajňaková, A. Feher // Физика низких температур. — 2014. — Т. 40, № 2. — С. 200-204. — Бібліогр.: 25 назв. — англ.
Підтримка:
Authors are thankful to Dr. D. Khalyavin (ISIS, United Kingdom) for fruitful collaboration. We are thankful to Prof. M.F. Kharchenko and Prof. V.V. Eremenko for fruitful discussions. This work was supported by the Slovak Research and Development Agency under the contract No. APVV-0132-11 and by the State Fund of NAS of Ukraine under the contact No.4/11-H. One of the authors, E. F., is grateful to the SAIA (Slovak Academic Information
Agency), for the award of a fellowship.
Дата:
2014
Переглядів:
845
Завантажень:
499
Анотація:
The exchange bias (EB) phenomenon has been found in Nd₂/₃Ca₁/₃MnO₃ perovskite. The phenomenon manifests itself as a negative horizontal shift of magnetization hysteresis loops. The EB phenomenon is evident of an interface exchange coupling between coexisting antiferromagnetic (AFM) and ferromagnetic (FM) phases and
confirms the phase separated state of the compound at low temperatures. The EB effect is found to be strongly dependent on the cooling magnetic field and the temperature, which is associated with the evolution of spontaneous AFM–FM phase separated state of the compound. Analysis of magnetic hysteresis loops has shown that ferromagnetic moment MFM originating from the FM clusters saturates in a relatively low magnetic field about H ∼ 0.4 T. The obtained saturation value MFM (1 T) ∼ 0.45 µB is in a good agreement with our previous neutron diffraction data.
