Surface morphology and growth mechanism of YBa2Cu3O7 films by chemical vapor deposition in a magnetic field

Yanwei Ma; Kazuo Watanabe; Satoshi Awaji; Mitsuhiro Motokawa

doi:10.1016/S0022-0248(01)01587-1

Surface morphology and growth mechanism of YBa₂Cu₃O₇ films by chemical vapor deposition in a magnetic field

Yanwei Ma, Kazuo Watanabe, Satoshi Awaji, Mitsuhiro Motokawa

High Field Laboratory for Superconducting Materials

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

We have investigated the influence of a magnetic field on YBa₂Cu₃O₇ (YBCO) films grown directly on polycrystalline silver substrates by metalorganic chemical vapor deposition (CVD). Clearly, application of a magnetic field during the CVD process not only changed the surface morphology of YBCO films, but also improved their crystallinity and grain connectivity. Furthermore, it is found that the growth mechanism of YBCO films was changed from the spiral growth mode at zero field to the 2D or 3D island growth mode under an external magnetic field. A discussion on the mechanism of this field-induced growth mode change is also presented.

Original language	English
Pages (from-to)	483-489
Number of pages	7
Journal	Journal of Crystal Growth
Volume	233
Issue number	3
DOIs	https://doi.org/10.1016/S0022-0248(01)01587-1
Publication status	Published - 2001 Dec

Keywords

A1. growth models
A1. magnetic fields
A3. metalorganic chemical vapor deposition
B2. superconducting materials

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

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abstract = "We have investigated the influence of a magnetic field on YBa2Cu3O7 (YBCO) films grown directly on polycrystalline silver substrates by metalorganic chemical vapor deposition (CVD). Clearly, application of a magnetic field during the CVD process not only changed the surface morphology of YBCO films, but also improved their crystallinity and grain connectivity. Furthermore, it is found that the growth mechanism of YBCO films was changed from the spiral growth mode at zero field to the 2D or 3D island growth mode under an external magnetic field. A discussion on the mechanism of this field-induced growth mode change is also presented.",

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AU - Watanabe, Kazuo

AU - Awaji, Satoshi

AU - Motokawa, Mitsuhiro

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AB - We have investigated the influence of a magnetic field on YBa2Cu3O7 (YBCO) films grown directly on polycrystalline silver substrates by metalorganic chemical vapor deposition (CVD). Clearly, application of a magnetic field during the CVD process not only changed the surface morphology of YBCO films, but also improved their crystallinity and grain connectivity. Furthermore, it is found that the growth mechanism of YBCO films was changed from the spiral growth mode at zero field to the 2D or 3D island growth mode under an external magnetic field. A discussion on the mechanism of this field-induced growth mode change is also presented.

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KW - A1. magnetic fields

KW - A3. metalorganic chemical vapor deposition

KW - B2. superconducting materials

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