Publication: Binary and Pseudobinary Invar Materials based on Intermediate Valence Compounds
Дата
2019
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© 2019, Pleiades Publishing, Ltd.Abstract—: A new type of binary and pseudobinary invar materials based on intermediate valence samarium compounds Sm0.8B6, Sm1 – xLaxB6 (x = 0, 0.1, 0.22, and 0.5), Sm0.67Y0.33S, Sm0.55Y0.45S, and Sm2.75C60 are developed. The Weiss two-level invar model is used to describe the anomalous contribution to the coefficient of thermal expansion (CTE) for Sm0.8B6 and Sm1 – xLaxB6 (x = 0, 0.1, 0.22, and 0.5). The minimum position of the CTE of samarium hexaboride as a function of the degree of lanthanum doping is determined. The obtained dependence allows one to predict the CTE minimum position for Sm1 – xLaxB6 compounds in the temperature range from 40 to 180 K and to optimize the developed composite invar materials, where the positive CTE of the functional material is compensated by the negative CTE of the valence-unstable system.
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Serebrennikov, D. A. Binary and Pseudobinary Invar Materials based on Intermediate Valence Compounds / Serebrennikov, D.A., Clementyev, E.S., Alekseev, P.A. // Journal of Surface Investigation. - 2019. - 13. - № 6. - P. 1203-1208. - 10.1134/S102745101906048X
URI
https://www.doi.org/10.1134/S102745101906048X
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https://openrepository.mephi.ru/handle/123456789/19080
https://www.scopus.com/record/display.uri?eid=2-s2.0-85077062330&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000511702500034
https://openrepository.mephi.ru/handle/123456789/19080