As‐Grown Superconductivity of Bi‐System Thin Films Prepared by Magnetron Sputtering with Three Pb Doped Targets: (Bi 1.6 Pb0.4) 1 + a (SrCa)2 Cu3 O x, (Bi 1.6 Pb0.4) 1 (SrCa)2+c Cu3 Ox and (Bi 1.6 Pb0.4) 1 (SrCa)2Cu3+cOx (a = 0.5, b= 1,c= 1.5)

1989 ◽  
Vol 169 ◽  
Author(s):  
Ken'ichi Kuroda ◽  
Masami Tanioku ◽  
Kazuyoshi Kojima ◽  
Koichi Hamanaka

AbstractSuperconducting Bi system thin films have been formed on MgO(100) substrates by RF magnetron sputtering from three Pb‐doped targets: Bi2.4 Pb0.6 Sr2 Ca2 CU3 O x ,Bi 1.6 Pb0.4 Sr3 Ca3 CU3 O x and Bi 1.6 Pb 0.4 Sr2 Ca2 CU4.5 O x. The as‐grown films formed at substrate temperatures above 600 °C showed superconductivity, though, they did not contain Pb. The film, formed at 660°C and kept at the same substrate temperature and gas pressure as the sputtering conditions for 5 h after deposition, showed a resistivity drop at 115 K and zero resistivity at 83 K. The Jc value of the film was 4x105 A/cm2 at 77 K and 3x107 A/cm 2 at 20 K.


1997 ◽  
Vol 472 ◽  
Author(s):  
S.K. Kang ◽  
M.S. Park ◽  
D.B. Kim ◽  
K.S. No ◽  
S.H. Cho

ABSTRACTPLZT(X/70/100) thin films on MgO(100), Pt/Ti/MgO(100), and Pt/Ti/Si(100) have been prepared by RF-magnetron sputtering process from sintered target with compositions of PLZT(X/70/100), where X=5, 10, and 15, respectively. The effects of substrate temperature, substrate and gas pressure on deposited thin films were studied. Crystalline and surface characterization was analyzed using XRD, SEM, AES, and AFM. X-ray rocking curves were measured to examine the film orientation. It was observed that the gas pressure was the dominant influence on having (001) preferred orientation. As a result, the degree of c-axis orientation increased as gas pressure decreased.



2015 ◽  
Vol 833 ◽  
pp. 127-133
Author(s):  
Jie Yu ◽  
Jie Xing ◽  
Xiu Hua Chen ◽  
Wen Hui Ma ◽  
Rui Li ◽  
...  

La0.9Sr0.1Ga0.8Mg0.2O3-δ (LSGM) electrolyte thin films were fabricated on La0.7Sr0.3Cr0.5Mn0.5O2.75 (LSCM) porous anode substrates by Radio Frequency (RF) magnetron sputtering method. The compatibility between LSGM and LSCM was examined. Microstructures of LSGM thin films fabricated were observed by scanning electron microscope (SEM). The effect of substrate temperature on LSGM thin films was clarified by X-ray Diffraction (XRD). Deposition rate increases firstly at the range of 50°C~150°C, and then decreases at the range of 150°C ~300°C. After annealing, perovskite structure with the same growth orientation forms at different substrate temperature. Crystallite size decreases at first, to the minimum point at 150°C, then increases as substrate temperature rises.





1988 ◽  
Vol 27 (Part 2, No. 9) ◽  
pp. L1679-L1682 ◽  
Author(s):  
Takashi Mochiku ◽  
Yoko Kanke ◽  
Zhongmin Wen ◽  
Ienari Iguchi ◽  
Eiso Yamaka


2014 ◽  
Vol 904 ◽  
pp. 205-208
Author(s):  
J.H. Gu ◽  
Z.Y. Zhong ◽  
S.B. Chen ◽  
C.Y. Yang ◽  
J. Hou

Zinc oxide (ZnO) thin films were deposited by radio frequency (RF) magnetron sputtering technique on glass substrates in pure argon gas. The optical transmission stectra of the films were measured by ultraviolet-visible spectrophotometer. The effects of argon gas pressure on optical properties of the deposited films were investigated. The optical band-gap of the films was evaluated in terms of the Taucs law. The results show that the argon gas pressure has slightly affected the optical band-gap of the deposited films. Furthermore, the refractive index and extinction coefficient of the films were determined by means of the optical characterization methods. Meanwhile, the dispersion behavior of the refractive index was studied by the single-oscillator model of Wemple and DiDomenico, and the physical parameters of the average oscillator strength, average oscillator wavelength, oscillator energy, the refractive index dispersion parameter and the dispersion energy were obtained.



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