Optical and Magnetic Properties of ${\\rm Zn}_{1-x}{\\rm Mn}_{x}{\\rm O}$ Grown by Plasma-Assisted Molecular Beam Epitaxy

Author

Wu Ching Chou ; An-Jye Tzou ; Hsuan-Shao Chen ; Kun-Feng Chien ; Wen-Chung Fan ; Chu-Shou Yang ; Meei-Ru Chen ; Hui-Ling Kao ; Syang-Ywan Jeng ; Luc Huy Hoang

Author_Institution

Dept. of Electrophys., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

50

Issue

6

fYear

2014

fDate

Jun-14

Firstpage

1

Lastpage

4

Abstract

Zn_1-xMn_xO films (0 ≤ ×≤ 0.070) were grown by plasma-assisted molecular beam epitaxy on Si substrates with AlN buffer layers. For low Mn concentration samples, x ≤ 0.02, photoluminescence spectra show strong near band edge emission. Strong phonon and exciton coupling-induced resonant Raman scattering was observed. Paramagnetic, antiferromagnetic, and ferromagnetic phases were observed. Room temperature ferromagnetism for all samples was attributed to the bound magnetic polaron effect.

Keywords

II-VI semiconductors; Raman spectra; antiferromagnetic materials; doping profiles; excitons; ferromagnetic materials; magnetic epitaxial layers; magnetic polarons; manganese compounds; molecular beam epitaxial growth; paramagnetic materials; phonons; photoluminescence; plasma deposition; semiconductor epitaxial layers; semiconductor growth; wide band gap semiconductors; zinc compounds; AlN buffer layers; Mn concentration; Si substrates; Si-AlN; Zn_1-xMn_xO; antiferromagnetic phases; bound magnetic polaron effect; exciton coupling-induced resonant Raman scattering; magnetic properties; near band edge emission; optical properties; paramagnetic phases; phonon coupling-induced resonant Raman scattering; photoluminescence spectra; plasma-assisted molecular beam epitaxy; room temperature ferromagnetism; temperature 293 K to 298 K; thin films; Frequency modulation; Ions; Magnetic hysteresis; Magnetic resonance; Manganese; Phonons; Zinc oxide; Magnetic semiconductors; semiconductor epitaxial layers; semiconductor films; semiconductor materials measurements;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2304674

Filename

6832876

Optical and Magnetic Properties of Grown by Plasma-Assisted Molecular Beam Epitaxy

Wu Ching Chou ; An-Jye Tzou ; Hsuan-Shao Chen ; Kun-Feng Chien ; Wen-Chung Fan ; Chu-Shou Yang ; Meei-Ru Chen ; Hui-Ling Kao ; Syang-Ywan Jeng ; Luc Huy Hoang

jour

Optical and Magnetic Properties of ${\\rm Zn}_{1-x}{\\rm Mn}_{x}{\\rm O}$ Grown by Plasma-Assisted Molecular Beam Epitaxy