Abstract:
:Epitaxy is widely employed to create highly oriented crystalline films. A less appreciated, but nonetheless powerful means of creating such films is via topotactic transformation, in which a chemical reaction transforms a single crystal of one phase into a single crystal of a different phase, which inherits its orientation from the original crystal. Topotactic reactions may be applied to epitactic films to substitute, add or remove ions to yield epitactic films of different phases. Here we exploit a topotactic reduction reaction to provide a non-ultra-high vacuum (UHV) means of growing highly oriented single crystalline thin films of the easily over-oxidized half-metallic semiconductor europium monoxide (EuO) with a perfection rivalling that of the best films of the same material grown by molecular-beam epitaxy or UHV pulsed-laser deposition. As the technique only requires high-vacuum deposition equipment, it has the potential to drastically improve the accessibility of high-quality single crystalline films of EuO as well as other difficult-to-synthesize compounds.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Mairoser T,Mundy JA,Melville A,Hodash D,Cueva P,Held R,Glavic A,Schubert J,Muller DA,Schlom DG,Schmehl Adoi
10.1038/ncomms8716subject
Has Abstractpub_date
2015-07-16 00:00:00pages
7716issn
2041-1723pii
ncomms8716journal_volume
6pub_type
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