Stress Analysis on Single-Crystal Diamonds by Raman Spectroscopy 3D Mapping

E. J. Di Liscia; F. álvarez; E. Burgos; E. B. Halac; H. Huck; M. Reinoso

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Stress Analysis on Single-Crystal Diamonds by Raman Spectroscopy 3D Mapping

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Results on stress analysis for single-crystal diamonds are presented. Isolated crystals were studied by Raman mapping and depth profiling techniques, using confocal microscopy. Diamonds were deposited on molybdenum and tantalum by hot filament and microwave CVD methods at growth rates between 10 and 30 μm·h-1. Crystals from 10 to 40 μm size were examined. Local stress was evaluated by analyzing the position, broadening and splitting of the 1332 cm-1 Raman peak in a 3D mapping. For the (001) orientation, the most stressed zone was found at the center of the crystal base, close to the interface with the substrate: a Raman peak around 1340 cm-1 was measured, corresponding to a pressure c.a. 3 GPa, according to our dynamical calculations. This peak disappears few microns out of the center, suggesting that this highly concentrated stress sector was the nucleation zone of the crystal. A shifting and slight broadening of the 1332 cm-1 band was observed in the rest of the crystal. The causes of these effects are discussed: they proved not to be due to anisotropic stress but to refractive effects. Same results were found for different crystal sizes and growth rates.

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《材料科学与应用期刊（英文）》 |2013年第3期|191-197|共7页
作者
E. J. Di Liscia; F. álvarez; E. Burgos; E. B. Halac; H. Huck; M. Reinoso;
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作者单位

Departamento de Física;

Comisión Nacional de Energía Atómica;

Buenos Aires;

Argentina;

Departamento de Física;

Comisión Nacional de Energía Atómica;

Buenos Aires;

Argentina;

Escuela de Ciencia y Tecnología;

Universidad Nacional de San Martín;

Buenos Aires;

Argentina;

Departamento de Física;

Comisión Nacional de Energía Atómica;

Buenos Aires;

Argentina;

Escuela de Ciencia y Tecnología;

Universidad Nacional de San Martín;

Buenos Aires;

Argentina;

Consejo Nacional de Investigaciones Científicas y Técnicas;

Buenos Aires;

Argentina.;

Departamento de Física;

Comisión Nacional de Energía Atómica;

Buenos Aires;

Argentina;

Consejo Nacional de Investigaciones Científicas y Técnicas;

Buenos Aires;

Argentina.;

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原文格式 PDF
正文语种 chi
中图分类化学;
关键词
Diamond; Stress; Raman; Spectroscopy; 3D; Mapping;

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Stress Analysis on Single-Crystal Diamonds by Raman Spectroscopy 3D Mapping

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