High-temperature/high-pressure X-ray diffraction: Recent developments |
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| Authors: | D Schiferl S W Johnson A S Zinn |
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| Institution: | 1. Los Alamos National Laboratory Los Alamos , New Mexico, 87545, USA;2. Department of Chemistry , University of California , Berkeley, CA, USA |
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| Abstract: | Abstract We have developed two Merrill-Bassett diamond-anvil cells for specialized high-temperature uses. The first is constructed largely of rhenium to provide uniform, constant P and T on the order of 20 GPa at 1200 K for extended periods. The second is for single-crystal x-ray diffraction, but can be heated to 630 K at 20 GPa to grow single-crystal samples which cannot be produced at room temperature. With this cell, the crystal structure of ?-O2 was shown to be monoclinic with a = 3.649 A, b = 5.493 A, c = 7.701 A, and β = 116.11° at 19.7 GPa. |
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| Keywords: | Diamond-anvil cell high-temperature high-pressure rhenium X-ray ?-O2 |
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