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Article . 2011 . Peer-reviewed
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Comparação de amostras de quartzo alfa e de quartzo com enxofre por meio de técnicas espectroscópicas

Authors: Thiago Michel de Brito Farias; Alessandra Marlice de Brito Farias;

Comparação de amostras de quartzo alfa e de quartzo com enxofre por meio de técnicas espectroscópicas

Abstract

O quartzo é um dos minerais mais abundantes da crosta terrestre com aplicações na indústria, na geologia e na arqueologia. Formado pelo tetraedro SiO4, este mineral possui canais ao longo do eixo-c que , ao permitirem a entrada de dopantes, podem induzir efeitos que alteram a sua dureza, a sua cor entre outras características do material. O presente trabalho teve como objetivo o estudo de duas variedades de quartzo natural (quartzo alfa e com enxofre) através de técnicas espectroscópicas. Embora as análises químicas não tenham indicado a existência do dopante enxofre, através de transformações dos espectros de FT-IR pode-se deduzir que o enxofre está contido nos canais ao longo do eixo-c, sendo evaporado após pulverização da amostra de quartzo com enxofre.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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