Extremely Low Temperature Crystallization in the A2M3O12 Family of Negative Thermal Expansion Materials. Issue 8 (10th February 2016)

• Record Type: Journal Article
• Authors: Young, Lindsay; Alvarez, Pablo Torrico; Liu, Hongfei; Lind, Cora
• Is Part Of: European journal of inorganic chemistry. Issue 8(2016)
• Page Start: 1251
• Page End: 1256
• Publication Date: 2016-02-10
• Subjects: Sol‐gel processes -- Amorphous materials -- Low‐temperature crystallization -- Negative thermal expansion; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201501420
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: A2 M3 O12 materials (A = Al, Sc, Fe, In, Ga, Y; M = Mo, W) were synthesized using the non‐hydrolytic sol‐gel process. In contrast to previous studies, in which amorphous materials were recovered that required heating to 500–700 °C to induce crystallization, several compounds could be crystallized in a temperature range compatible with low temperature processing of devices and composites. Under certain reaction conditions, crystalline Sc2 Mo3 O12, Fe2 Mo3 O12, and In2 Mo3 O12 were obtained at temperatures as low as 230 °C. This may allow use of these materials for in‐situ composite formation, which could result in new practical applications. Abstract : Under optimized reaction conditions, the non‐hydrolytic sol‐gel process can be used to obtain crystalline Sc2 Mo3 O12, Fe2 Mo3 O12, and In2 Mo3 O12 after heating at temperatures as low as 230 °C. This may allow use of these materials during in‐situ composite preparation methods.