Epitaxial growth of (Hg,Mn)Te by the interdiffused multilayer process

Abstract
Epitaxial films of (Hg,Mn)Te have been grown by metalorganic vapor phase epitaxy using the interdiffused multilayer process (IMP), on GaAs (100) substrates with a approximately 1 mum buffer layer of CdTe. In order to grow the MnTe component, it was found necessary to grow at 380-degrees-C with a precursor partial pressure ratio (Mn:Te) of 5-8. The IMP layers were found to be more uniform in composition and thickness than comparable layers of (Hg,Mn)Te grown by the more conventional direct alloy growth method. X-ray rocking curve widths for IMP layers were typically approximately 200'' with a variation across the layer of approximately 10%. Variations in composition were < 10%.