The Alkali-treatment of Geloses under Pressure
نویسندگان
چکیده
منابع مشابه
Are light alkali metals still metals under high pressure ?
The extended Hubbard Hamiltonian on a bcc lattice is studied at half-filling and for a finite hopping between next-nearest-neighbours, in mean-field approximation. An ionic insulating broken-symmetry phase is predicted for any hydrogenoid bcc solid in the density range 1.0 < r s < 2.6. The occurrence of an ionic phase would explain the failure to achieve hydrogen metallization at high pressures...
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A series of recent x-ray diffraction experiments carried out by scientists from the Max-PlanckInstitut FKF in Stuttgart and the ESRF in Grenoble on elemental semiconductors and alkali metals under high pressure have provided new insight in pressure induced structural transformations. New structures have been identified, and some of these have surprising similarities, such as low coordination nu...
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Enhanced superconducting properties of bicrystalline YBa2Cu3Ox and alkali metals under pressure
Nearly hydrostatic pressures are found to enhance the critical current density Jc through single grain boundaries in YBa2Cu3Ox rings and to induce superconductivity in Li. Whereas Li becomes superconducting above 20 GPa at temperatures as high as 15 K, no superconductivity was observed above 4 K in Na to 65 GPa nor in K above 4 K to 43.5 GPa or above 1.5 K to 35 GPa.
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ژورنال
عنوان ژورنال: NIPPON SUISAN GAKKAISHI
سال: 1942
ISSN: 1349-998X,0021-5392
DOI: 10.2331/suisan.10.237