| Инд. авторы: | Litasov K.D., Bekker T.B., Sagatov N.E., Gavryushkin P.N., Krinitsyn P.G., Kuper K.E. |
| Заглавие: | (Fe,Ni)(2)P allabogdanite can be an ambient pressure phase in iron meteorites |
| Библ. ссылка: | Litasov K.D., Bekker T.B., Sagatov N.E., Gavryushkin P.N., Krinitsyn P.G., Kuper K.E. (Fe,Ni)(2)P allabogdanite can be an ambient pressure phase in iron meteorites // Scientific Reports. - 2020. - Vol.10. - Iss. 1. - Art.8956. - ISSN 2045-2322. |
| Внешние системы: | DOI: 10.1038/s41598-020-66039-0; PubMed: 32488079; SCOPUS: 2-s2.0-85085908505; WoS: 000560797800018; |
| Реферат: | eng: An orthorhombic modification of (Fe,Ni)(2)P, allabogdanite, found in iron meteorites was considered to be thermodynamically stable at pressures above 8GPa and temperatures of 1673 K according to the results of recent static high-pressure and high-temperature experiments. A hexagonal polymorphic modification of (Fe,Ni)(2)P, barringerite, was considered to be stable at ambient conditions. Experimental investigation through the solid-state synthesis supported by ab initio calculations was carried out to clarify the stability fields of (Fe,Ni)(2)P polymorphs. Both experimental and theoretical studies show that Fe2P-allabogdanite is a low-temperature phase stable at ambient conditions up to a temperature of at least 773K and, therefore, is not necessarily associated with high pressures. This is consistent with the textural relationships of allabogdanite in iron meteorites.
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| Ключевые слова: | MOSSBAUER; FE2P; ONELLO; CRYSTAL-STRUCTURE; DIAGRAM; MAGNETIC-PROPERTIES; NEUTRON-DIFFRACTION; PYROMETAMORPHIC ROCKS; HATRURIM FORMATION; PHOSPHIDE; |
| Издано: | 2020 |
| Физ. характеристика: | 8956 |