Spontaneous hydrogenation of ti films evaporated on nacl substrates ii

Yoshitaka Kasukabe; Yukio Yamada

doi:10.1143/JJAP.29.L1904

Spontaneous hydrogenation of ti films evaporated on nacl substrates ii

Yoshitaka Kasukabe, Yukio Yamada

IEHE - Division of Research in Higher Education

Tohoku University

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

17 Citations (Scopus)

Abstract

The growth and structure of Ti films evaporated on ultra-high-vacuum- and air-cleaved NaCl substrates at room temperature have been studied by reflection high-energy electron diffraction. The 2 nm-thick film on the former showed bcc- and CaF₂-type (TiH_1.5) reflections while that on the latter showed TiH_1.5ones immediately after the evaporation. Judging from the lattice parameter (0.33 nm), the bcc crystallite was analyzed to be β-Ti. This is the first observation of β-Ti grown in evaporated Ti films. The β-Ti changed into TiH_1.5with time. This spontaneous hydrogenation mechanism of the evaporated Ti films is discussed.

Original language	English
Pages (from-to)	L1904-L1906
Journal	Japanese Journal of Applied Physics
Volume	29
Issue number	10
DOIs	https://doi.org/10.1143/JJAP.29.L1904
Publication status	Published - 1990 Oct

Keywords

Evaporated Ti films
Growth mechanism
Hydrogenation
NaCI substrates
RHEED
TiH
β-Ti

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10.1143/JJAP.29.L1904

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abstract = "The growth and structure of Ti films evaporated on ultra-high-vacuum- and air-cleaved NaCl substrates at room temperature have been studied by reflection high-energy electron diffraction. The 2 nm-thick film on the former showed bcc- and CaF2-type (TiH1.5) reflections while that on the latter showed TiH1.5ones immediately after the evaporation. Judging from the lattice parameter (0.33 nm), the bcc crystallite was analyzed to be β-Ti. This is the first observation of β-Ti grown in evaporated Ti films. The β-Ti changed into TiH1.5with time. This spontaneous hydrogenation mechanism of the evaporated Ti films is discussed.",

keywords = "Evaporated Ti films, Growth mechanism, Hydrogenation, NaCI substrates, RHEED, TiH, β-Ti",

author = "Yoshitaka Kasukabe and Yukio Yamada",

year = "1990",

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T1 - Spontaneous hydrogenation of ti films evaporated on nacl substrates ii

AU - Kasukabe, Yoshitaka

AU - Yamada, Yukio

PY - 1990/10

Y1 - 1990/10

N2 - The growth and structure of Ti films evaporated on ultra-high-vacuum- and air-cleaved NaCl substrates at room temperature have been studied by reflection high-energy electron diffraction. The 2 nm-thick film on the former showed bcc- and CaF2-type (TiH1.5) reflections while that on the latter showed TiH1.5ones immediately after the evaporation. Judging from the lattice parameter (0.33 nm), the bcc crystallite was analyzed to be β-Ti. This is the first observation of β-Ti grown in evaporated Ti films. The β-Ti changed into TiH1.5with time. This spontaneous hydrogenation mechanism of the evaporated Ti films is discussed.

AB - The growth and structure of Ti films evaporated on ultra-high-vacuum- and air-cleaved NaCl substrates at room temperature have been studied by reflection high-energy electron diffraction. The 2 nm-thick film on the former showed bcc- and CaF2-type (TiH1.5) reflections while that on the latter showed TiH1.5ones immediately after the evaporation. Judging from the lattice parameter (0.33 nm), the bcc crystallite was analyzed to be β-Ti. This is the first observation of β-Ti grown in evaporated Ti films. The β-Ti changed into TiH1.5with time. This spontaneous hydrogenation mechanism of the evaporated Ti films is discussed.

KW - Evaporated Ti films

KW - Growth mechanism

KW - Hydrogenation

KW - NaCI substrates

KW - RHEED

KW - TiH

KW - β-Ti

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JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 10

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Spontaneous hydrogenation of ti films evaporated on nacl substrates ii

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