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March 1, 1967Journal of Research of the National Bureau of Standards Section A Physics and ChemistryOpen Access

Techniques for the growth of large single crystals of potassium of high purity

Howard J. Foster Paul H. E. Meijer

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Abstract

The preparation of large, high purity, single crystals of potassium is described. First, high initial purity is obtained by careful zone refining. Then, a modification of the Bridgman technique is applied which leads to crystals with resistivity ratios up to 6800 at 4.2 °K. The modification consisted of a heat shield as described in the test. We concluded from the magnetoacoustic experiments that were subsequently done with these samples, that the samples had mean free paths of the order of 10

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Foster et al. (1967) studied this question.

synapsesocial.com/papers/6a94d3526ab6fd61fbd1d110 https://doi.org/10.6028/jres.071a.018

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