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|a Kim, Dong Hun
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|a Massachusetts Institute of Technology. Department of Materials Science and Engineering
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|a Kim, Dong Hun
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|a Sun, Xueyin
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|a Ross, Caroline A.
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|a Kim, Tae Cheol
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|a Eun, Yun Jae
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|a Lee, Taeho
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|a Jeong, Sung Gyun
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|a Ross, Caroline A.
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|a Sun, Xueyin
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|a Magnetic Phase Formation in Self-Assembled Epitaxial BiFeO[subscript 3]-MgO and BiFeO[subscript 3]-MgAl[subscript 2]O[subscript 4] Nanocomposite Films Grown by Combinatorial Pulsed Laser Deposition
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|b American Chemical Society (ACS),
|c 2016-04-06T21:09:14Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/102191
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|a Self-assembled epitaxial BiFeO[subscript 3]-MgO and BiFeO[subscript 3]-MgAl[subscript 2]O[subscript 4] nanocomposite thin films were grown on SrTiO[subscript 3] substrates by pulsed laser deposition. A two-phase columnar structure was observed for BiFeO[subscript 3]-MgO codeposition within a small window of growth parameters, in which the pillars consisted of a magnetic spinel phase (Mg,Fe)[subscript 3]O[subscript 4] within a BiFeO[subscript 3] matrix, similar to the growth of BiFeO[subscript 3]-MgFe[subscript 2]O[subscript 4] nanocomposites reported elsewhere. Further, growth of a nanocomposite with BiFeO[subscript 3]-(CoFe[subscript 2]O[subscript 4]/MgO/MgFe[subscript 2]O[subscript 4]), in which the minority phase was grown from three different targets, gave spinel pillars with a uniform (Mg,Fe,Co)[subscript 3]O[subscript 4] composition due to interdiffusion during growth, with a bifurcated shape from the merger of neighboring pillars. BiFeO[subscript 3]-MgAl[subscript 2]O[subscript 4] did not form a well-defined vertical nanocomposite in spite of having lower lattice mismatch, but instead formed a two-phase film with in which the spinel phase contained Fe. These results illustrate the redistribution of Fe between the oxide phases during oxide codeposition to form a ferrimagnetic phase from antiferromagnetic or nonmagnetic targets.
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|a United States. Defense Advanced Research Projects Agency (Microelectronics Advanced Research Corporation. Microelectronics Advanced Research Corporation)
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|a National Research Foundation of Korea (2015R1C1A1A01051656)
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|a en_US
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|a Article
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|t ACS Applied Materials & Interfaces
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