NDLI: Experimental and computational analysis of transition metal ion-doped AlInN/GaN thin films

Content Provider	Royal Society of Chemistry (RSC)
Author	Majid, Abdul
Copyright Year	2015
Abstract	To study ion beam modification on the structural and magnetic properties of metal organic chemical vapor deposition (MOCVD)-grown wurtzite AlInN layers, 200 keV ions of transition metals (TM) Cr, Mn, Co and V were implanted at doses of 5 × 1014, 5 × 1015 and 5 × 1016 cm−2 into AlInN/GaN thin films. The structural properties of the materials were studied by X-ray diffraction (XRD) and Rutherford backscattering spectroscopy (RBS) techniques. XRD analysis revealed that the GaN-related peak for all the samples remained at its usual Bragg position of 2θ = 34.56°, whereas there was a shift in the AlInN peak from its position of 2θ = 35.51° for the as-grown samples. RBS analysis exhibited a shift in the position of the indium-related peak, indicating a migration of indium atoms towards the interface of heterostructures. Moreover, this peak was observed to split into two peaks, which is an indication of the depth-wise redistribution of indium atoms within the material. The measurements of magnetization versus temperature as well as the applied magnetic field performed using a SQUID magnetometer indicated the room temperature ferromagnetism in the materials. The density functional theory based calculations of TM-doped AlInN predicted that the dopant ions would preferably substitute In sites in the alloy.
Starting Page	72592
Ending Page	72600
Page Count	9
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	5
Issue Number	89
Journal	RSC Advances
DOI	10.1039/c5ra12764e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	RBS Wurtzite crystal structure SQUID Electronvolt Ion Magnetometer Rutherford backscattering spectrometry Indium Gallium nitride X-ray crystallography Rutherford Dopant Density functional theory Ferromagnetism Metalorganic vapour phase epitaxy Magnetic field
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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