Abstract

A small furnace suitable for the collection of single crystal data at temperatures between room temperature and about 300 degrees C using a computer controlled four-circle diffractometer is described. The device was primarily designed for solid state phase transformation investigations, but may be used for general diffraction studies. An automatic temperature controller is incorporated to compensate for temperature variations of the diffractometer environment over lengthy measurement periods. The integral arrangement of the furnace allows transferability of the device, whilst maintaining the sample temperature. Under normal operation, the temperature typically showed, without readjustment, drifts not exceeding approximately 0.1 degrees C d-1 over several days. Ease of access to the sample for replacement or adjustment is an additional feature. The region of reciprocal space normally accessible for data collection is not significantly reduced by use of the furnace.

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