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Abstract:
利用脉冲激光沉积技术在LaAlO3(00l)单晶衬底上制备了La0.67Ba0.33MnO3薄膜,研究了CO2激光辐照对La0.67Ba0.33MnO3薄膜的微结构和磁电性能的影响.结果表明,经激光辐照后,La0.67Ba0.33MnO3薄膜的结晶性增强,薄膜应变减小;薄膜表面形貌由"岛状"结构变为"平原"结构,且粗糙度大大降低;同时,薄膜的饱和磁化强度、铁磁居里温度、金属-绝缘态转变温度和磁电阻增大,而矫顽场和电阻率减小.根据对传统退火效应的分析和理论计算,认为激光辐照导致的表面微结构的变化以及薄膜的氧含量和均匀性的提高对La0.67Ba0.33MnO3薄膜的磁电性能的改善与优化密切相关.
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Source :
物理学报
ISSN: 1000-3290
Year: 2009
Issue: 3
Volume: 58
Page: 1997-2001
1 . 0 0 0
JCR@2022
ESI Discipline: PHYSICS;
JCR Journal Grade:3
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: 1
Chinese Cited Count:
30 Days PV: 6
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