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Alkali Halide‐Doped Ga2S3–GeS2 Glasses
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.5 ) Pub Date : 2020-05-08 , DOI: 10.1002/pssb.202000115
Maria Bokova 1 , Alla Paraskiva 1 , Mohammad Kassem 1 , Eugene Bychkov 1
Affiliation  

Glass‐forming region, macroscopic properties, and electrical conductivity changes are systematically studied in the MY–Ga2S3–GeS2 systems, where M = Na, K, Rb and Y = Cl, Br, I, as a function of alkali concentration, MY chemical composition, and Ga2S3/GeS2 ratio using two composition lines: series A – (MY)x(Ga2S3)0.2–0.2x(GeS2)0.8–0.8x and series B – (MY)x(Ga2S3)0.2 + 0.2x(GeS2)0.8−1.2x. Glasses of series B are characterized by higher maximum MY concentration, increasing with the cation radius up to 66.7 mol% in case of RbCl. The halide nature is found to be less significant for the vitrification ability. The density of samples varies monotonically between the two end‐members of each series. Glass transition temperature decreases with increasing alkali concentration, ranging from 426 °C (x = 0) to 237 °C for (RbCl)67(Ga2S3)33 sample. The conductivity of MY–Ga2S3–GeS2 glasses decreases with increasing cation radius. The Ga2S3/GeS2 ratio and the halide nature affect the conductivity weakly.

中文翻译:

掺杂碱金属卤化物的Ga2S3–GeS2玻璃

在MY–Ga 2 S 3 –GeS 2系统中系统地研究了玻璃形成区域,宏观性质和电导率变化,其中M = Na,K,Rb和Y = Cl,Br,I是碱的函数浓度,MY化学组成和Ga 2 S 3 / GeS 2比率,使用两条组成线:系列A –(MY)x(Ga 2 S 30.2–0.2 x(GeS 20.8–0.8 x和系列B –( MY)x(Ga 2 S 30.2 + 0.2 x(GeS20.8-1.2 x。B系列玻璃的特点是最大MY浓度较高,在RbCl的情况下,阳离子半径最高可达66.7 mol%。发现卤化物性质对玻璃化能力的重要性较小。样品的密度在每个系列的两个末端成员之间单调变化。 对于(RbCl)67(Ga 2 S 333样品,玻璃化转变温度随碱浓度的升高而降低,范围从426°C(x = 0)到237°C 。MY-Ga 2 S 3 -GeS 2玻璃的电导率随阳离子半径的增加而降低。中的Ga 2小号3 / GeS 2的比率和卤化物性质对电导率的影响很小。
更新日期:2020-05-08
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