DOI: 10.1063/1.1649819. Effect of Mn concentration on the structural, optical, and magnetic properties of GaMnN

Effect of Mn concentration on the structural, optical, and magnetic properties of GaMnN

10.1063/1.1649819

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

The room temperature magnetization of GaMnN films grown by molecular beam epitaxy on (0001) sapphire substrates with Mn concentrations varying from 0 to 9 at. % was found to depend on Mn concentration, with a maximum magnetization found at ∼3 at. % Mn. High-resolution x-ray diffraction measurements show that the c-plane lattice constant initially decreases with increasing Mn concentration, then increases when the Mn content increases above ∼3 at. %. This increase is accompanied by a decrease in the full width at half maximum of the rocking curves. Extended x-ray absorption fine structure results indicate that the nonsubstitutional Mn is not present in the form of GaxMny clusters and thus is most likely present in the form of an interstitial. Optical absorption measurements show only a slight increase in the band gap for material with 3 at. % Mn, relative to undoped GaN.

Bibliography

Thaler, G., Frazier, R., Gila, B., Stapleton, J., Davidson, M., Abernathy, C. R., Pearton, S. J., & Segre, C. (2004). Effect of Mn concentration on the structural, optical, and magnetic properties of GaMnN. Applied Physics Letters, 84(8), 1314â1316.

Authors 8

G. Thaler (first)
R. Frazier (additional)
B. Gila (additional)
J. Stapleton (additional)
Mark Davidson (additional)
C. R. Abernathy (additional)
S. J. Pearton (additional)
Carlos Segre (additional)

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Dates

Type	When
Created	21 years, 6 months ago (Feb. 12, 2004, 6:03 p.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 9:33 p.m.)
Indexed	1 year, 6 months ago (Feb. 7, 2024, 8:20 p.m.)
Issued	21 years, 6 months ago (Feb. 23, 2004)
Published	21 years, 6 months ago (Feb. 23, 2004)
Published Print	21 years, 6 months ago (Feb. 23, 2004)

Funders 0

None

BibTeX

@article{Thaler_2004, title={Effect of Mn concentration on the structural, optical, and magnetic properties of GaMnN}, volume={84}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1649819}, DOI={10.1063/1.1649819}, number={8}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Thaler, G. and Frazier, R. and Gila, B. and Stapleton, J. and Davidson, Mark and Abernathy, C. R. and Pearton, S. J. and Segre, Carlos}, year={2004}, month=feb, pages={1314–1316} }

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