Effects of growth temperature for superconducting properties and microstructures of PLD-ErBa2Cu3O7-δ film with BaNb2O6

被引：13

作者：

Kai, H. ^{[1
,8
]}

Mukaida, M. ^{[1
,8
]}

Teranishi, R. ^{[1
,8
]}

Mori, N. ^{[1
]}

Yamada, K. ^{[1
]}

Horii, S. ^{[2
,8
]}

Ichinose, A. ^{[3
,8
]}

Kita, R. ^{[4
,8
]}

Matsumoto, K. ^{[5
,8
]}

Yoshida, Y. ^{[6
,8
]}

Awaji, S. ^{[7
]}

Watanabe, K. ^{[7
]}

Namba, M. ^{[7
]}

Fujiyoshi, T. ^{[9
]}

机构：

[1] Kyushu Univ, Grad Sch Engn, Dept Mat Phys & Chem, Nishi Ku, Fukuoka 8190395, Japan

[2] Univ Tokyo, Bunkyo Ku, Tokyo 1138685, Japan

[3] CRIEPI, Kanagawa 2400196, Japan

[4] Shizuoka Univ, Shizuoka 4328651, Japan

[5] Kyushu Inst Technol, Tohata Ku, Fukuoka 8048550, Japan

[6] Nagoya Univ, Chikusa Ku, Aichi 4648603, Japan

[7] Tohoku Univ, Aoba Ku, Sendai, Miyagi 9808577, Japan

[8] CREST JST, Kawaguchi, Saitama 3320012, Japan

[9] Kumamoto Univ, Kumamoto 8608555, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2008年 / 468卷 / 15-20期

关键词：

ErBa2Cu3O7-delta (ErBCO) film; BaNb2O6 (BNO)-doping;

D O I：

10.1016/j.physc.2008.05.100

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

we report effects of growth temperature on superconducting properties and microstructure of ErBa2Cu3O7-delta (ErBCO) films with BaNb2O6 (BNO)-doping grown by pulse laser deposition (PLD) on SrTiO3 (STO) substrates. The BNO was introduced into the ErBCO films as artificial pinning centers. X-ray diffraction analysis indicated the high orientation of both c-axis and in-plane for the obtained BNO-doped ErBCO (BNO + ErBCO) films. Ba(Er0.5Nb0.5)O-3 (BENC) nanorods were observed clearly in transmission electron microscopy (TEM) images of the BNO + ErBCO films. The BENO nanorod was thinner with decreasing the growth temperature. The BNO + ErBCO films showed higher critical current density (J(C)) than that of a pure ErBCO film in a magnetic field (H) in H parallel to c-axis, indicating that BENO nanorods played as c-axis correlated pinning centers. Furthermore, we found a tendency that J(C) of the BNO + ErBCO films were enhanced with decreasing the growth temperature. Consequently, the pinning effect of the introduced BENO was controlled by the optimization of growth condition such as growth temperature. (c) 2008 Published by Elsevier B.V.

引用

页码：1854 / 1857

页数：4

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