期刊
PHYSICAL REVIEW B
卷 85, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.155411
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资金
- US Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division
- Oak Ridge National Laboratory by the Office of Basic Energy Sciences, US Department of Energy
- US DOE [DE-AC05-00OR22725, DE-SC0002136]
- National Basic Research Program of China (973 Program) [2011CB921801]
- US DOE Office of Basic Energy Sciences, the US DOE [DE-SC0002136]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1053854] Funding Source: National Science Foundation
A growth diagram of Lu-Fe-O compounds on MgO(111) substrates using pulsed laser deposition is constructed based on extensive growth experiments. The LuFe2O4 phase can only be grown in a small range of temperature and O-2 pressure conditions. An understanding of the growth mechanism of Lu-Fe-O compound films is offered in terms of the thermochemistry at the surface. Superparamagnetism is observed in the LuFe2O4 film and is explained in terms of the effect of the impurity hexagonal LuFeO3 (h-LuFeO3) phase and structural defects.
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