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Phase change memory materials, bad glass formers with nanosecond crystallization times

Authors: Frumar Miloslav | Wágner Tomáš | Přikryl Jan | Frumarová Božena | Hromádko Luděk

Year: 2012

Type of publication: ostatní do riv

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
cze	Phase change memory materials, bad glass formers with nanosecond crystallization times	A review of materials used in non-volatile memory cells, in Blue-ray and DVD disks, their structure, stoichiometry, doping, crystallization and amorphization is given. The results are based on many years' research activities of University of Pardubice group and they are compared with other authors' results. The materials are mostly narrow gap semiconductors in amorphous state and degenerated semiconductors in crystalline form. The phase change are produced by intensive laser or electrical pulses. The compounds formed by crystallization are similar to metallic alloys their composition and properties can be changed in broad ranges without abrupt changes of structure and properties. Very often, different structure of slowly crystallized and formed metastable phases, crystallized by nanosecond lase pulses, can be obtained.	fázová změna; paměť; materiály
eng	Phase change memory materials, bad glass formers with nanosecond crystallization times	A review of materials used in non-volatile memory cells, in Blue-ray and DVD disks, their structure, stoichiometry, doping, crystallization and amorphization is given. The results are based on many years' research activities of University of Pardubice group and they are compared with other authors' results. The materials are mostly narrow gap semiconductors in amorphous state and degenerated semiconductors in crystalline form. The phase change are produced by intensive laser or electrical pulses. The compounds formed by crystallization are similar to metallic alloys their composition and properties can be changed in broad ranges without abrupt changes of structure and properties. Very often, different structure of slowly crystallized and formed metastable phases, crystallized by nanosecond lase pulses, can be obtained.	Phase change; memory; materials