Unstable mixing region in wurtzite In1 - X - YGaXAlYN

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

In In1 - XGaXN epitaxially grown by MOVPE, phase separation is experimentally found to occur at an indium composition of more than 20% from X-ray diffraction and microscopic examination using an analytical electron transmission microscope. Fitting the spinodal isotherms calculated from the free energy of mixing based on a strictly regular solution approximation using delta-lattice-parameter method to the experimental data, the constant of proportionality K between a lattice constant and the pseudobinary interaction parameter is determined. Using this K value, the pseudobinary interaction parameter is calculated using the delta-lattice-parameter method, and the unstable mixing region in a wurtzite structure In1-X-YGaXAlYN quaternary system is predicted.

Original languageEnglish
Pages (from-to)19-23
Number of pages5
JournalJournal of Crystal Growth
Volume189-190
DOIs
Publication statusPublished - 1998 Jun 15
Externally publishedYes

Keywords

  • III-V
  • InGaAlN
  • MOVPE
  • Phase separation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Unstable mixing region in wurtzite In<sub>1 - X - Y</sub>Ga<sub>X</sub>Al<sub>Y</sub>N'. Together they form a unique fingerprint.

Cite this