Thermophysical Properties of Single Crystals of CaF2–SrF2–RF3 (R = Ho, Pr) Fluorite Solid Solutions

Single crystals of Ca 1 – y Sr y R х F 2 + х (R = Ho, Pr) solid solutions with high optical quality have been grown by the Bridgman technique in vacuum using a fluorination atmosphere. The thermal conductivity of the Ca 0.60 Sr 0.40 – х Ho х F 2 + х solid solutions decreases from 3.27 to 2.37 W/(m K...

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Veröffentlicht in:	Inorganic materials 2020-09, Vol.56 (9), p.975-981
Hauptverfasser:	Kuznetsov, S. V., Konyushkin, V. A., Nakladov, A. N., Chernova, E. V., Popov, P. A., Pynenkov, A. A., Nishchev, K. N., Fedorov, P. P.
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Schlagworte:	Bridgman method Chemistry Chemistry and Materials Science Crystal growth Fluorination Fluorite Heat conductivity Heat transfer Holmium Industrial Chemistry/Chemical Engineering Inorganic Chemistry Materials Science Praseodymium Refractivity Room temperature Single crystals Solid solutions Strontium fluorides Thermal conductivity Thermophysical properties
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creator	Kuznetsov, S. V. Konyushkin, V. A. Nakladov, A. N. Chernova, E. V. Popov, P. A. Pynenkov, A. A. Nishchev, K. N. Fedorov, P. P.
description	Single crystals of Ca 1 – y Sr y R х F 2 + х (R = Ho, Pr) solid solutions with high optical quality have been grown by the Bridgman technique in vacuum using a fluorination atmosphere. The thermal conductivity of the Ca 0.60 Sr 0.40 – х Ho х F 2 + х solid solutions decreases from 3.27 to 2.37 W/(m K) as the fraction of holmium rises from 0 to 3 mol %, respectively. The room-temperature thermal conductivity of the Ca 0.50 Sr 0.50 – х Pr х F 2 + х solid solutions decreases from 3.38 to 2.18 W/(m K) as the fraction of praseodymium rises from 0 to 8 mol %, respectively. Increasing the holmium and praseodymium content of the ternary solid solutions leads to a gradual increase in their refractive index. With increasing wavelength, the refractive index gradually decreases.
doi_str_mv	10.1134/S0020168520090113
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The room-temperature thermal conductivity of the Ca 0.50 Sr 0.50 – х Pr х F 2 + х solid solutions decreases from 3.38 to 2.18 W/(m K) as the fraction of praseodymium rises from 0 to 8 mol %, respectively. Increasing the holmium and praseodymium content of the ternary solid solutions leads to a gradual increase in their refractive index. 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V.</creatorcontrib><creatorcontrib>Konyushkin, V. A.</creatorcontrib><creatorcontrib>Nakladov, A. N.</creatorcontrib><creatorcontrib>Chernova, E. V.</creatorcontrib><creatorcontrib>Popov, P. A.</creatorcontrib><creatorcontrib>Pynenkov, A. A.</creatorcontrib><creatorcontrib>Nishchev, K. N.</creatorcontrib><creatorcontrib>Fedorov, P. P.</creatorcontrib><collection>CrossRef</collection><jtitle>Inorganic materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kuznetsov, S. V.</au><au>Konyushkin, V. A.</au><au>Nakladov, A. N.</au><au>Chernova, E. V.</au><au>Popov, P. A.</au><au>Pynenkov, A. A.</au><au>Nishchev, K. N.</au><au>Fedorov, P. P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermophysical Properties of Single Crystals of CaF2–SrF2–RF3 (R = Ho, Pr) Fluorite Solid Solutions</atitle><jtitle>Inorganic materials</jtitle><stitle>Inorg Mater</stitle><date>2020-09-01</date><risdate>2020</risdate><volume>56</volume><issue>9</issue><spage>975</spage><epage>981</epage><pages>975-981</pages><issn>0020-1685</issn><eissn>1608-3172</eissn><abstract>Single crystals of Ca 1 – y Sr y R х F 2 + х (R = Ho, Pr) solid solutions with high optical quality have been grown by the Bridgman technique in vacuum using a fluorination atmosphere. The thermal conductivity of the Ca 0.60 Sr 0.40 – х Ho х F 2 + х solid solutions decreases from 3.27 to 2.37 W/(m K) as the fraction of holmium rises from 0 to 3 mol %, respectively. The room-temperature thermal conductivity of the Ca 0.50 Sr 0.50 – х Pr х F 2 + х solid solutions decreases from 3.38 to 2.18 W/(m K) as the fraction of praseodymium rises from 0 to 8 mol %, respectively. Increasing the holmium and praseodymium content of the ternary solid solutions leads to a gradual increase in their refractive index. With increasing wavelength, the refractive index gradually decreases.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S0020168520090113</doi><tpages>7</tpages></addata></record>
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subjects	Bridgman method Chemistry Chemistry and Materials Science Crystal growth Fluorination Fluorite Heat conductivity Heat transfer Holmium Industrial Chemistry/Chemical Engineering Inorganic Chemistry Materials Science Praseodymium Refractivity Room temperature Single crystals Solid solutions Strontium fluorides Thermal conductivity Thermophysical properties
title	Thermophysical Properties of Single Crystals of CaF2–SrF2–RF3 (R = Ho, Pr) Fluorite Solid Solutions
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