Substrate-induced epitaxial mixing of bulk-immiscible La5/8Sr3/8MnO3/LuMnO3 films

Hur, N.; Cheong, S.-W.; Kale, S. N.; Ogale, S. B.; Choudhary, R.; Shinde, S. R.; Venkatesan, T.
March 2005
Applied Physics Letters;3/14/2005, Vol. 86 Issue 11, p112507
Academic Journal
A mixture of a colossal magnetoresistance manganite (La5/8Sr3/8MnO3) and a multiferroic (LuMnO3), of potential interest for magnetoelectronics, was found to be bulk immiscible due to its structural/chemical incompatibility. Here, we demonstrate that thin-film epitaxy offers a route to achieve continuous perovskite solid solutions of such a bulk-immiscible mixture, allowing studies of their physical properties. The films grow with (110)- and (001)-preferred orientation on SrTiO3(100) and LaAlO3(100), respectively. The details of structural, magnetotransport, and magnetization data are discussed within the context of metal-insulator phase coexistence. Epitaxial stabilization of chemically immiscible phases clearly widens the scope of research on manganites as well as other materials.


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