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面内和面外取向对RBa_2Cu_3O_z薄膜热稳定性影响的研究

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许雪芹, 汤晨毅, 王璇, 程玲, 姚忻. 2010: 面内和面外取向对RBa_2Cu_3O_z薄膜热稳定性影响的研究, 物理学报, 59(2): 1294-1301.
引用本文: 许雪芹, 汤晨毅, 王璇, 程玲, 姚忻. 2010: 面内和面外取向对RBa_2Cu_3O_z薄膜热稳定性影响的研究, 物理学报, 59(2): 1294-1301.
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Xu Xue-Qin, Tang Chen-Yi, Wang Xuan, Cheng Ling, Yao Xin. 2010: In-plane and out-of-plane orientation influence on thermal stabilities of RBa_2Cu_3O_zthin film, Acta Physica Sinica, 59(2): 1294-1301.
Citation: Xu Xue-Qin, Tang Chen-Yi, Wang Xuan, Cheng Ling, Yao Xin. 2010: In-plane and out-of-plane orientation influence on thermal stabilities of RBa_2Cu_3O_zthin film, Acta Physica Sinica, 59(2): 1294-1301.
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面内和面外取向对RBa_2Cu_3O_z薄膜热稳定性影响的研究

  • 上海交通大学物理系,上海,200240

In-plane and out-of-plane orientation influence on thermal stabilities of RBa_2Cu_3O_zthin film

  • 摘要: 采用高温金相显微镜,实时观察Rba_2Cu_3O_z(RBCO,R代表稀土元素)薄膜的熔化过程.结合X射线衍射(XRD)极图的分析,对不同面内取向和面外取向的RBCO薄膜熔化行为进行横向比较,研究了RBCO微结构对于其热稳定性的影响,并用半共格界面能理论很好地解释了XRD分析和实时观察熔化过程的实验结果.对不同面内取向Yba_2Cu_3O_z(YBCO)薄膜的研究结果表明,空气中0°晶粒的热稳定性优于45°晶粒;此外还研究了c轴取向的SmBa_2Cu_3O_z(SmBCO)薄膜的热稳定性,结果表明微量α轴晶粒对SmBCO薄膜的熔化行为以及其热稳定性有明显影响.
    Abstract: Appling high temperature optical microscopy (HTOM), the in-situ observations on the melting process of RBa_2Cu_3O_z (RBCO) oxide thin films were carried out. Combined the X-ray diffraction (XRD) pole figures with the scanning electron microscope (SEM), the microstructure of RBCO thin films with different in-plane and out-of-plane orientations were studied. The relationship between the thermal stability of RBCO thin film and its microstructure was investigated. The conclusions of semi-coherent interface energy theory is in good agreement with the experimental results from HTOM, SEM and XRD. It is evident that the thermal stability of 0° in-plane YBCO grain surpasses the 45° one in the air. Additionally, it was found that a very small volume percentage of a-axis grain has an obvious influence on the decomposition behavior and thermal stability of SmBCO film.
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  • 刊出日期:  2010-02-28

面内和面外取向对RBa_2Cu_3O_z薄膜热稳定性影响的研究

  • 上海交通大学物理系,上海,200240

摘要: 采用高温金相显微镜,实时观察Rba_2Cu_3O_z(RBCO,R代表稀土元素)薄膜的熔化过程.结合X射线衍射(XRD)极图的分析,对不同面内取向和面外取向的RBCO薄膜熔化行为进行横向比较,研究了RBCO微结构对于其热稳定性的影响,并用半共格界面能理论很好地解释了XRD分析和实时观察熔化过程的实验结果.对不同面内取向Yba_2Cu_3O_z(YBCO)薄膜的研究结果表明,空气中0°晶粒的热稳定性优于45°晶粒;此外还研究了c轴取向的SmBa_2Cu_3O_z(SmBCO)薄膜的热稳定性,结果表明微量α轴晶粒对SmBCO薄膜的熔化行为以及其热稳定性有明显影响.

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