Artigo Revisado por pares

Molecular hydrogen in a -Si: H

1987; American Physical Society; Volume: 59; Issue: 4 Linguagem: Inglês

10.1103/revmodphys.59.835

ISSN

1539-0756

Autores

Yves J. Chabal, C. K. N. Patel,

Tópico(s)

Atomic and Subatomic Physics Research

Resumo

The past few years have seen a number of studies involving the presence of molecular hydrogen trapped in $a$-Si: H. The main techniques used have been nuclear magnetic resonance, calorimetry, and infrared absorption. The results suggest that ${\mathrm{H}}_{2}$ is trapped in a number of samples in microbubbles (\ensuremath{\approx} 10 \AA{}) under high pressure (\ensuremath{\approx} 2 kbar) at room temperature, solidifies around 25 K, and undergoes an orientational phase transition around 15 K. The data are reviewed here, and the effects that such ${\mathrm{H}}_{2}$ microbubbles may have on the properties of $a$-Si: H are discussed.

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