Weak ferromagnetism in hexagonal orthoferrites RFeO3 (R = Lu, Er-Tb)статья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Hexagonal orthoferrites of rare earths RFeO3 (R = Lu, Er-Tb) were grown epitaxially on (111)ZrO2(Y2O3) substrates using metal-organic chemical vapour deposition. Temperature and field dependences of magnetization were measured and analyzed for all samples and revealed weak ferromagnetic behavior below T = 120-140K. The difference in electronic structure along with a distinct similarity in the crystal structure of hexagonal manganites RMnO3 and hexagonal orthoferrites RFeO3 are brought into focus in order to explain the results. Hexagonal orthoferrites are regarded as a promising family of multiferroics. (C) 2011 American Institute of Physics. [doi : 10.1063/1.3643043]