Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4791697
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- Foundation of the National Natural Science Foundation of China [20771042, 90922034]
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The orthoferrite YFeO3 with orthorhombic perovskite structure (Pnma) has been synthesized by mild hydrothermal method. The temperature-dependent magnetization and hysteresis loops indicate that, due to the superexchange and Dzyaloshinskii-Moriya interactions in the crystals, the Fe spins order antiferromagnetically at the Neel temperature 655 K with a weak ferromagnetic moment. The observation of saturation polarization loops at room temperature and 77 K provide evidence for the ferroelectric character of the polycrystalline samples. Its Curie temperature has been obtained from the temperature dependence of the relative permittivities and thermal analysis. As a result, the structure exhibits simultaneously weak ferromagnetic and ferroelectric behavior. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4791697]
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