Growth Diagram and Magnetic Properties of Hexagonal LuFe2O4 Thin Films

Growth Diagram and Magnetic Properties of Hexagonal LuFe2O4 Thin Films

A growth diagram of Lu-Fe-O compounds on an MgO (111) substrate using pulsed laser deposition is constructed according to the experimental data. The LuFe2O4 phase can only be grown in a small range of temperature and O2 pressure conditions. Fundamental understanding of the growth mechanism of Lu-Fe-...

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Veröffentlicht in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2012-04, Vol.85 (15)
Hauptverfasser: Wang, Wenbin, Gai, Zheng, Chi, Miaofang, Fowlkes, Jason Davidson, Yi, Jieyu, Zhu, Leyi, Cheng, Xuemei, Keavney, David, Snijders, Paul C, Ward, Thomas Z, Shen, Jian, Xu, Xiaoshan
Format: Artikel
Sprache:eng
Schlagworte:
CHEMISTRY
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DEFECTS
DEPOSITION
LASERS
SUBSTRATES
SUPERPARAMAGNETISM
THIN FILMS
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Zusammenfassung:A growth diagram of Lu-Fe-O compounds on an MgO (111) substrate using pulsed laser deposition is constructed according to the experimental data. The LuFe2O4 phase can only be grown in a small range of temperature and O2 pressure conditions. Fundamental understanding of the growth mechanism of Lu-Fe-O compound films are gained in terms of the thermal chemistry at the surface. Superparamagnetism is observed in a film of LuFe2O4 clusters separated by the hexagonal LuFeO3 phase and structural defects.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.85.155411