Strain induced super-paramagnetism in Cr2O3 in the ultra thin film limit
Autor: | Yuan Cao, Peter A. Dowben, Bin Dong, Haseeb Kazi, Takashi Komesu, Jack L Rodenburg, M. Sky Driver, Frank L. Pasquale, Jeffry A. Kelber, Iori Tanabe |
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Rok vydání: | 2015 |
Předmět: | |
Zdroj: | MRS Proceedings. 1729:79-83 |
ISSN: | 1946-4274 0272-9172 |
Popis: | Ultra thin films of chromia (Cr2O3), less than 3 nm thick, grown epitaxial on α-Al2O3 (sapphire), and are thus compressively strained in-plane. The resulting films show evidence of some magnetic ordering above the Néel temperature of chromia (307 K). The observed higher temperature hysteresis effect observed are very likely a strain effect, and not associated with the typical antiferromagnetic ordering expected of chromia. |
Databáze: | OpenAIRE |
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