We grew spinel structured CoMn₂O₄ thin films and have studied post-growth annealing effects on their physical properties. After post-growth annealing at 700℃ that is lower than the growth temperature (720℃), crystal structure became cleared ac...
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https://www.riss.kr/link?id=A101195947
2015
Korean
spinel ; manganese oxide ; post-growth annealing ; phase transition ; ferrimagnetism ; 스피넬 ; 망간산화물 ; 후열처리 ; 상전이 ; 페리자성
428
KCI등재,ESCI
학술저널
144-148(5쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
We grew spinel structured CoMn₂O₄ thin films and have studied post-growth annealing effects on their physical properties. After post-growth annealing at 700℃ that is lower than the growth temperature (720℃), crystal structure became cleared ac...
We grew spinel structured CoMn₂O₄ thin films and have studied post-growth annealing effects on their physical properties. After post-growth annealing at 700℃ that is lower than the growth temperature (720℃), crystal structure became cleared accompanying a change of surface structure. In the temperature dependences of magnetization, phase transitions were observed at ~100 K for both before and after post-growth treated samples which were not observed for the bulk. For both samples, ferromagnetic behaviors were observed above 100 K while it turned to ferrimagnetism at low temperature below 100 K. In particular, the ferrimagnetic behavior became strong after the post-growth treatment. These results indicate that the post-growth annealing process plays an important role in determining the physical properties of spinel CoMn₂O₄ thin film.
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