Vacuum evaporation of NaCl and KC1 crystal surfaces doped with divalent impurities

M. José Yacamán; A. Gómez Rodríguez

doi:10.1080/14786437508222801

Vacuum evaporation of NaCl and KC1 crystal surfaces doped with divalent impurities

M. José Yacamán, A. Gómez Rodríguez

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12 Scopus citations

Abstract

Thermal evaporation in vacuum from the surfaces of NaCl: Fe⁺⁺; NaCl : Cd⁺⁺; NaCl : Mn⁺⁺ and KC1 : Mn⁺⁺ crystals has been studied. In all cases except that of cadmium, the impurity ions diffuse towards the surface and there produce nuclei of a second phase. These nuclei interact with the circular and rectangular step systems which are produced by evaporation and strongly modify the surface topography. The ratio V¹¹⁰/V¹⁰⁰ of the perpendicular components of the step velocities has been measured as a function of heating time. On more prolonged heating the circular step structure is not stable, but becomes rectangular. This transition can be explained using the model proposed by Budke for vacuum evaporation.

Original language	English (US)
Pages (from-to)	13-26
Number of pages	14
Journal	Philosophical Magazine
Volume	32
Issue number	1
DOIs	https://doi.org/10.1080/14786437508222801
State	Published - Jul 1975
Externally published	Yes

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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title = "Vacuum evaporation of NaCl and KC1 crystal surfaces doped with divalent impurities",

abstract = "Thermal evaporation in vacuum from the surfaces of NaCl: Fe++; NaCl : Cd++; NaCl : Mn++ and KC1 : Mn++ crystals has been studied. In all cases except that of cadmium, the impurity ions diffuse towards the surface and there produce nuclei of a second phase. These nuclei interact with the circular and rectangular step systems which are produced by evaporation and strongly modify the surface topography. The ratio V110/V100 of the perpendicular components of the step velocities has been measured as a function of heating time. On more prolonged heating the circular step structure is not stable, but becomes rectangular. This transition can be explained using the model proposed by Budke for vacuum evaporation.",

author = "Yacam{\'a}n, {M. Jos{\'e}} and Rodr{\'i}guez, {A. G{\'o}mez}",

note = "Funding Information: The authors are indebted to G. A. Bassett of the University of Warwick for his many valuable suggestions and discussions. One of the authors (A.G.R.) wishes to thank UNAM for financial support.",

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T1 - Vacuum evaporation of NaCl and KC1 crystal surfaces doped with divalent impurities

AU - Yacamán, M. José

AU - Rodríguez, A. Gómez

N1 - Funding Information: The authors are indebted to G. A. Bassett of the University of Warwick for his many valuable suggestions and discussions. One of the authors (A.G.R.) wishes to thank UNAM for financial support.

PY - 1975/7

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N2 - Thermal evaporation in vacuum from the surfaces of NaCl: Fe++; NaCl : Cd++; NaCl : Mn++ and KC1 : Mn++ crystals has been studied. In all cases except that of cadmium, the impurity ions diffuse towards the surface and there produce nuclei of a second phase. These nuclei interact with the circular and rectangular step systems which are produced by evaporation and strongly modify the surface topography. The ratio V110/V100 of the perpendicular components of the step velocities has been measured as a function of heating time. On more prolonged heating the circular step structure is not stable, but becomes rectangular. This transition can be explained using the model proposed by Budke for vacuum evaporation.

AB - Thermal evaporation in vacuum from the surfaces of NaCl: Fe++; NaCl : Cd++; NaCl : Mn++ and KC1 : Mn++ crystals has been studied. In all cases except that of cadmium, the impurity ions diffuse towards the surface and there produce nuclei of a second phase. These nuclei interact with the circular and rectangular step systems which are produced by evaporation and strongly modify the surface topography. The ratio V110/V100 of the perpendicular components of the step velocities has been measured as a function of heating time. On more prolonged heating the circular step structure is not stable, but becomes rectangular. This transition can be explained using the model proposed by Budke for vacuum evaporation.

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Vacuum evaporation of NaCl and KC1 crystal surfaces doped with divalent impurities

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