Formation of strained superlattices with a macroscopic period via spinodal decomposition of III-V semiconductor alloys

Ipatova, IP; Shchukin, VA; Malyshkin, VG; Maslov, AYu; Anastassakis, E

dc.contributor.author	Ipatova, IP	en
dc.contributor.author	Shchukin, VA	en
dc.contributor.author	Malyshkin, VG	en
dc.contributor.author	Maslov, AYu	en
dc.contributor.author	Anastassakis, E	en
dc.date.accessioned	2014-03-01T01:08:22Z
dc.date.available	2014-03-01T01:08:22Z
dc.date.issued	1991	en
dc.identifier.issn	0038-1098	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10441
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0026139461&partnerID=40&md5=ce0cf11b8068216f1da827d77c6d75d0	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Metals and Alloys	en
dc.subject.other	Semiconductor Materials	en
dc.subject.other	III-V Semiconductor Alloys	en
dc.subject.other	Quaternary Alloys	en
dc.subject.other	Superlattices	en
dc.title	Formation of strained superlattices with a macroscopic period via spinodal decomposition of III-V semiconductor alloys	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1991	en
heal.abstract	The theory of (in) stability of III-V A1-xBxC1-yDy-type quaternary alloys with respect to the coherent phase separation is developed on the basis of the regular solution approximation. It is shown that, in spite of the stabilizing factor of coherency elastic strains, the III-V quaternary alloys which have positive formation enthalpy become at some temperature unstable with respect to coherent phase separation. The equilibrium structure resulting after the phase separation is a one-dimensional modulated two-phase structure with alternating alloy composition ( a system of compositional domains, or, in the other words, a superlattice with a macroscopic periodicity ). Alloy compositions of both phases are determined by the conditions of the minimal homogeneous bulk free energy; the superlattice periodicity is governed by the interplay of the interface free energy and the inhomogeneous part of the elastic free energy. The coherent phase separation diagram and the periodicity of spontaneously formed superlattices are calculated for Ga1-xInxAs1-yPy. © 1991.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Solid State Communications	en
dc.identifier.isi	ISI:A1991FC62500005	en
dc.identifier.volume	78	en
dc.identifier.issue	1	en
dc.identifier.spage	19	en
dc.identifier.epage	24	en