Preparation and Critical Current Measurements of Laser Ablated YBCO Superconducting Thin Films

Chin. Phys. Lett.

1991, Vol. 8

Issue (8): 416-419 DOI:

Original Articles

Preparation and Critical Current Measurements of Laser Ablated YBCO Superconducting Thin Films

ZHANG Yaogang;SEII Changqing;FAN Shoushan;CUI Changgeng^*;LI Shanlin^*;LI Jun^*;LIU Mingxiong^*

Physics Department, Tsinghua University, Beijing 100084 ^*Institute of Physics, Academia Sinica, Beijing 100080

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ZHANG Yaogang, SEII Changqing, FAN Shoushan et al 1991 Chin. Phys. Lett. 8 416-419

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Abstract High T_c superconducting YBCO films have been fabricated by in-situ pulsed laser ablation method. The substrates used were SrTiO₃ (100) and were heated to 650°C during deposition. X-ray diffraction results indicate that the as-deposited 6lms are highly oriented with c-axis perpendicular to the film surfaces. The critical currents were measured at 77.5 K under different magnetic fields from 0 up to 7 T by using dc four point method. The zero resistance temperature was 89 K and the highest critical current density was 2.5 x 10⁶ A/cm² at 77.5 K under zero field.

Keywords: 74.75.+t 81.15.Ef 74.60.Jg

Published: 01 August 1991

PACS:	74.75.+t
	81.15.Ef
	74.60.Jg

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1991/V8/I8/0416

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	ZHANG Yaogang
	SEII Changqing
	FAN Shoushan
	CUI Changgeng
	LI Shanlin
	LI Jun
	LIU Mingxiong

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