Study of floating zone profiles in materials grown by the laser- heated pedestal growth technique under isostatic atmosphere by D. Reyes Ardila, L. Vergara Cofré, L. B. Barbosa, and J. P. Andreeta

Crystal Research and Technology

Cryst. Res. Technol. 39, 855 (2004) - Abstract -

Study of floating zone profiles in materials grown by the laser- heated pedestal growth technique under isostatic atmosphere

D. Reyes Ardila, L. Vergara Cofré, L. B. Barbosa*, and J. P. Andreeta*

Departmento de Física, Universidad de Santiago de Chile, Santiago, 7254758, Chile
*Instituto de Física de São Carlos, Departamento de Física e Ciência dos Materiais, Universidade de São Paulo, Av. Trabalhador SãoCarlense 400, São Carlos, SP, 13560-970, Brazil

Keywords	laser processing, shape stability, surface tension
PACS	81.20.-n, 81.10.Fq, 81.10.-h
DOI	10.1002/crat.200410265

The analysis of the melt profile in floating zone techniques has been made in the past years by raising differential equations in terms of Cartesian coordinates and numerically looking for its solution. Although this method permits to establish quite good approximations to the real melt profile, the solutions are deficient in the prediction of new information that can be related to the thermophysical properties of most materials. We investigated the applicability of a different approach that starting from a novel differential equation permits its fitting to the profile of a real situation and also the determination of some important growth parameters like the range of shape stability. Results concerning melt profiles of materials grown under controlled atmosphere are reported.

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