J. Mater. Sci. Technol. ›› 2011, Vol. 27 ›› Issue (3): 223-226.

• Reviews • 上一篇    下一篇

Annealing effect on magnetic and electronic properties of La0.67Sr0.33MnO3 thin films grown on glass substrates by RF magnetron sputtering

shaojie fang1,Zhiyong PANG2,Shenghao Han3,fenggong wang1,liang Lin1   

  1. 1. 山东大学
    2.
    3. Department of Space Science and Applied Physics, Shandong University at Weihai
  • 收稿日期:2010-04-20 修回日期:2010-10-28 出版日期:2011-03-28 发布日期:2011-03-21
  • 通讯作者: Shenghao Han
  • 基金资助:

    国家自然科学基金资助项目;山东省自然科学基金;山东省科学技术发展计划

Annealing Effect on Transport and Magnetic Properties of La0:67Sr0:33MnO3 Thin Films Grown on Glass Substrates by RF Magnetron Sputtering

Shaojie Fang1), Zhiyong Pang1), Fenggong Wang1), Liang Lin1) and Shenghao Han1,2)   

  1. 1) School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
    2) School of Space Science and Applied Physics, Shandong University at Weihai, Weihai 264209, China
  • Received:2010-04-20 Revised:2010-10-28 Online:2011-03-28 Published:2011-03-21
  • Contact: Shenghao Han
  • Supported by:

    ;Scientific and Technological Developing Scheme of Shandong Province

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摘要： The manganite La0.67Sr0.33MnO3 (LSMO) thin films were grown on glass substrates in a mixed argon and oxygen atmosphere by using RF magnetron sputtering. The structure, electronic and magnetic properties of LSMO films were studied by annealing the films in air at 550 oC and 620 oC. The out-of-plane lattice parameter aLSMO contracted after annealing and was close to that of bulk LSMO abulk, indicating that the internal strain was fully relaxed. Nanocrystalline grains were observed in the annealed films. Enhanced saturation magnetization and metal-to-insulator transition temperature TMI 268 K were also obtained . Curie temperatures Tc of the as-grown films was 340 K with the same as that of annealed at 550 oC, but dropped to 315 K when the annealing temperature increased to 620 oC, which can be attributed to the oxygen release during annealing in atmosphere.

Abstract: The manganite La0:67Sr0:33MnO3 (LSMO) thin films were grown on glass substrates in a mixed argon and oxygen atmosphere by using RF magnetron sputtering. The structural characteristics, transport behaviors and magnetic properties of LSMO films were studied by annealing the films in air at 550 and 620°C. The out-of-plane lattice parameter aLSMO contracted after annealing and was close to that of bulk LSMO abulk, indicating that the internal strain was fully relaxed. Nanocrystalline grains were observed in the annealed films. Enhanced saturation magnetization and metal-to-insulator transition temperature (TMI=268 K) were also obtained. Curie temperatures (Tc) of the as-grown films was 340 K with the same as that of annealed at
550°C, but dropped to 315 K when the annealing temperature increased to 620°C, which can be attributed to the oxygen release during annealing in atmosphere.

Key words: La0:67Sr0:33MnO3, Annealing, Magnetron sputtering, Nanocrystalline