Structural phase transition of potassium under high-pressure and low-temperature condition

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Abstract

We performed electrical resistance and powder X-ray diffraction measurements of potassium under high-pressure and low-temperature condition. In the temperature dependence of resistance under several pressure, no superconducting transition was observed below 1 K. From the powder X-ray diffraction measurement, the K-III phase, it has a host-guest structure, is stable in wide pressure range. Furthermore, the K-IV phase disappeared and the amorphous-like region with no X-ray diffraction peaks appeared at low temperature below 150 K.

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Sakata, M., Nakamoto, Y., Matsuoka, T., Ohishi, Y., & Shimizu, K. (2017). Structural phase transition of potassium under high-pressure and low-temperature condition. In Journal of Physics: Conference Series (Vol. 950). IOP Publishing Ltd. https://doi.org/10.1088/1742-6596/950/4/042020

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