Super-high density information storage material antimony potassium sulfide and synthesis method thereof

Abstract

This invention relates to super high density information storage material potassium stibium sulfide, and its synthetic method. This invention method overcomes the prior art shortcomings such as overcritical demands for synthesis of KSb5S8 and sensitiveness to the air. The production procedures are: polyethyl pyrrolidone is dissolved in ethandiol used as reaction medium; added, respectively, are stibium trichloride and potassium ethyl xanthate, agitating to obtain even solution, making them reacting thoroughly, and then proceeding the steps of cooling, washing and drying to obtain the inventive products with good crystallization, better shape and uniform aggregation state. Advantages are: simple process, high pureness of product, the shape of reactants can be controlled.

Description

technical field [0001] The invention belongs to the field of inorganic material synthesis. Background technique [0002] With the globalization of information technology and multimedia, the development of new ultra-high-density storage materials has become a requirement of the times and a research hotspot. The present invention can well control the shape and aggregation state of materials, and it is believed that The development of information storage materials has a great impetus [0003] The write / erase mechanism based on reversible phase transitions has great application prospects in reversible information storage, but there are quite few materials based on reversible crystalline-vitreous-crystalline phase transitions, especially The stoichiometric amount of such materials is even less. KSb 5 S 8 It is such a material that can be used as a rewritable ultra-high-density information storage medium. [0004] German "Advanced Materials" (Advanced Materials) (2003, Vol. 15...

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Problems solved by technology

[0004] German "Advanced Materials" (Advanced Materials) (2003, Vol. 15, pp. 1428-1431) reported KSb for the first time 5 S 8 High-temperature solid-phase method synthesis, but it needs to be synthesized at a high temperature of 850°C in a vacuum state, the conditions are quite harsh, and it is not suitable for mass production. This method generally only has the value of basic research. American "Chemical Materials" (Chemistry Materials) ( 2004, No. 16, pp. 1932-1937) studied the thermal phase transition properties and mechanism of the material in detail, these studies have shown that KSb 5 S 8 It has great application prospects in ultra-high density information storage

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