GROWTH MODE OF Cu-RICH PARTICLES ON LASER-ABLATED YBa2Cu3O7 THIN FILMS

doi:10.1088/1004-423X/5/3/009

Abstract

Abstract The microstructure of the laser-ablated YBa₂Cu₃O₇ (YBCO) thin film deposited on heated (100) SrTiO₃ substrate was examined by transmission electron microscope. The par-ticles on the film mainly consist of CuO and few CuYO₂. Most of these non-superconducting particles nucleate on or near the surface of the film and protrude about 100-400 nm in height, A large amount of a-axis YBCO grains also exist in the film, which nucleate at the substrate surface and grow perpendicularly above the c-axis YBCO film. The YBCO thin film deposited under low oxygen pressure has very different microstructure compared with YBCO thin film deposited under high oxygen pressure.

Received: 01 June 1995
Accepted manuscript online:

PACS:	68.55.A-	(Nucleation and growth)
	74.78.Bz
	81.15.Fg	(Pulsed laser ablation deposition)
	68.37.Lp	(Transmission electron microscopy (TEM))
	74.72.Bk
	61.72.Mm	(Grain and twin boundaries)

Fund: Project supported by the National Center for Research and Development for Superconductivity of China.

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YANG YE (杨晔), LIU JUN-ZHENG (刘军政), LI LIN (李林), ZHOU YU-QING (周玉清), ZHOU YUE-LIANG (周岳亮), CHEN ZHENG-HAO (陈正豪), Lü HUI-BIN (吕惠宾), CUI DA-FU (崔大复), YANG GUO-ZHEN (杨国桢) GROWTH MODE OF Cu-RICH PARTICLES ON LASER-ABLATED YBa₂Cu₃O₇ THIN FILMS 1996 Acta Physica Sinica (Overseas Edition) 5 219

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GROWTH MODE OF Cu-RICH PARTICLES ON LASER-ABLATED YBa2Cu3O7 THIN FILMS

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GROWTH MODE OF Cu-RICH PARTICLES ON LASER-ABLATED YBa₂Cu₃O₇ THIN FILMS