Effects of annealing temperature and time on microstructure and magnetic properties of Pr-Co thin films
来源期刊：Rare Metals2012年第2期
论文作者：LI Zhi, DING Hao, ZHANG Jun, WANG Hanbin, and WANG Hao Faculty of Physics and Electronic Technology, Hubei University, Wuhan , China
文章页码：121 - 124
摘 要：A series of Pr-Co thin films were deposited on the Si （100） substrates with Cr underlayer by magnetron sputtering. The effects of both the post-annealing temperature and the annealing time on the microstructure and magnetic properties for the Pr-Co films were studied systemati- cally. The as-deposited Pr-Co thin films are mostly amorphous and tend to crystallize after annealing at temperatures above 600 C. When the annealing time is increased, the films show a complicated structure with various phases coexisting. Accordingly, the as-deposited film and low temperature annealed films are soft magnets and films annealed at temperatures beyond 600 C tend to be hard magnets. When the annealing time is increased from 5 min to 2 h, the films transfer from hard magnets to soft again. The sample annealed at 600 C for 10 min shows the largest coercivity of 0.59 T.
LI Zhi, DING Hao, ZHANG Jun, WANG Hanbin, and WANG Hao Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062, China
摘 要：A series of Pr-Co thin films were deposited on the Si （100） substrates with Cr underlayer by magnetron sputtering. The effects of both the post-annealing temperature and the annealing time on the microstructure and magnetic properties for the Pr-Co films were studied systemati- cally. The as-deposited Pr-Co thin films are mostly amorphous and tend to crystallize after annealing at temperatures above 600 C. When the annealing time is increased, the films show a complicated structure with various phases coexisting. Accordingly, the as-deposited film and low temperature annealed films are soft magnets and films annealed at temperatures beyond 600 C tend to be hard magnets. When the annealing time is increased from 5 min to 2 h, the films transfer from hard magnets to soft again. The sample annealed at 600 C for 10 min shows the largest coercivity of 0.59 T.
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