Aging studies on discontinuous silver films in ultrahigh vacuum

Manjunatha Pattabi; N. Suresh; S. M. Chaudhari; A. Banerjee; D. M. Phase; A. Gupta; K. Mohan Rao

doi:10.1016/S0040-6090(97)00911-5

Aging studies on discontinuous silver films in ultrahigh vacuum

Manjunatha Pattabi^*
, N. Suresh
, S. M. Chaudhari
, A. Banerjee
, D. M. Phase
, A. Gupta
, K. Mohan Rao

^*Corresponding author for this work

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

18 Citations (Scopus)

Abstract

The results of aging studies carried out on discontinuous silver films deposited on glass substrates held at room temperature in a vacuum of 2 × 10^-8 Torr are presented in this article. The films were prepared by electron beam deposition at a rate of 0.2 Å/s. Discontinuous silver films show considerable aging for extended period even in a clean ultrahigh vacuum (UHV) obtained using a turbomolecular pump when the oxygen partial pressure is as low as 10^-11 Torr, thus ruling out the possibility of oxidation being responsible for the aging in these films. The coalescence rate values in UHV and in a vacuum of 2 × 10^-6 Torr obtained using an oil diffusion pump are nearly the same. This indicates that the aging of island films is not due to oxidation. A film with an initial resistance of 2 M Ω/□ showed a drastic fall in resistance after about 30 min of aging. This interesting discontinuous-semicontinuous transition observed in a conservative system is a clear evidence for the mobility of islands.

Original language	English
Pages (from-to)	340-343
Number of pages	4
Journal	Thin Solid Films
Volume	322
Issue number	1-2
DOIs	https://doi.org/10.1016/S0040-6090(97)00911-5
Publication status	Published - 08-06-1998

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1016/S0040-6090(97)00911-5

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title = "Aging studies on discontinuous silver films in ultrahigh vacuum",

abstract = "The results of aging studies carried out on discontinuous silver films deposited on glass substrates held at room temperature in a vacuum of 2 × 10-8 Torr are presented in this article. The films were prepared by electron beam deposition at a rate of 0.2 {\AA}/s. Discontinuous silver films show considerable aging for extended period even in a clean ultrahigh vacuum (UHV) obtained using a turbomolecular pump when the oxygen partial pressure is as low as 10-11 Torr, thus ruling out the possibility of oxidation being responsible for the aging in these films. The coalescence rate values in UHV and in a vacuum of 2 × 10-6 Torr obtained using an oil diffusion pump are nearly the same. This indicates that the aging of island films is not due to oxidation. A film with an initial resistance of 2 M Ω/□ showed a drastic fall in resistance after about 30 min of aging. This interesting discontinuous-semicontinuous transition observed in a conservative system is a clear evidence for the mobility of islands.",

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AU - Pattabi, Manjunatha

AU - Suresh, N.

AU - Chaudhari, S. M.

AU - Banerjee, A.

AU - Phase, D. M.

AU - Gupta, A.

AU - Mohan Rao, K.

PY - 1998/6/8

Y1 - 1998/6/8

N2 - The results of aging studies carried out on discontinuous silver films deposited on glass substrates held at room temperature in a vacuum of 2 × 10-8 Torr are presented in this article. The films were prepared by electron beam deposition at a rate of 0.2 Å/s. Discontinuous silver films show considerable aging for extended period even in a clean ultrahigh vacuum (UHV) obtained using a turbomolecular pump when the oxygen partial pressure is as low as 10-11 Torr, thus ruling out the possibility of oxidation being responsible for the aging in these films. The coalescence rate values in UHV and in a vacuum of 2 × 10-6 Torr obtained using an oil diffusion pump are nearly the same. This indicates that the aging of island films is not due to oxidation. A film with an initial resistance of 2 M Ω/□ showed a drastic fall in resistance after about 30 min of aging. This interesting discontinuous-semicontinuous transition observed in a conservative system is a clear evidence for the mobility of islands.

AB - The results of aging studies carried out on discontinuous silver films deposited on glass substrates held at room temperature in a vacuum of 2 × 10-8 Torr are presented in this article. The films were prepared by electron beam deposition at a rate of 0.2 Å/s. Discontinuous silver films show considerable aging for extended period even in a clean ultrahigh vacuum (UHV) obtained using a turbomolecular pump when the oxygen partial pressure is as low as 10-11 Torr, thus ruling out the possibility of oxidation being responsible for the aging in these films. The coalescence rate values in UHV and in a vacuum of 2 × 10-6 Torr obtained using an oil diffusion pump are nearly the same. This indicates that the aging of island films is not due to oxidation. A film with an initial resistance of 2 M Ω/□ showed a drastic fall in resistance after about 30 min of aging. This interesting discontinuous-semicontinuous transition observed in a conservative system is a clear evidence for the mobility of islands.

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DO - 10.1016/S0040-6090(97)00911-5

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VL - 322

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EP - 343

JO - Thin Solid Films

JF - Thin Solid Films

IS - 1-2

ER -

Aging studies on discontinuous silver films in ultrahigh vacuum

Abstract

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