TY - JOUR
T1 - Effect of annealing on optical absorption of LaAlO3 at terahertz frequencies
AU - Nomura, Ken Ichi
AU - Okami, Shimpei
AU - Xie, Xiaojun
AU - Mizuno, Maya
AU - Fukunaga, Kaori
AU - Ohki, Yoshimichi
PY - 2011/2/1
Y1 - 2011/2/1
N2 - Absorption spectra of LaAlO3(100) single crystals were measured at frequencies from 1.0 to 3.5 THz. A new absorption peak appears at ̃3:0 THz after annealing at temperatures above 500 °C. Simultaneously, striped domains with widths ranging from about 20 to about 300 μm in the original samples completely disappeared. Since oxygen vacancies are assumed to play an important role in the formation of domains, the absorption peak at ̃3:0 THz seems to be related to oxygen vacancies
AB - Absorption spectra of LaAlO3(100) single crystals were measured at frequencies from 1.0 to 3.5 THz. A new absorption peak appears at ̃3:0 THz after annealing at temperatures above 500 °C. Simultaneously, striped domains with widths ranging from about 20 to about 300 μm in the original samples completely disappeared. Since oxygen vacancies are assumed to play an important role in the formation of domains, the absorption peak at ̃3:0 THz seems to be related to oxygen vacancies
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U2 - 10.1143/JJAP.50.021502
DO - 10.1143/JJAP.50.021502
M3 - Article
AN - SCOPUS:79951926878
VL - 50
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 2
M1 - 021502
ER -