Abstract
Magnetic-field-dependent optical properties of nitrogen-doped ZnO (ZnO:N) thin films were investigated using surface plasmon resonance (SPR) and a highly sensitive () magnetic field sensor has been realized. The refractive index (RI) of ZnO:N film increases from 1.949 to 2.025 with increase in N doping from 0% to 10% demonstrating tunable RI. In contrast to pure ZnO, SPR curves for ZnO:N films exhibit a shift toward lower angles with increasing applied magnetic field from 0 to 35 mT due to change in reflectance of light upon reflection from ferromagnetic surface. Results indicate promising application of ferromagnetic ZnO:N film as a magnetic field sensor.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Chih-Ming Wei, Chih-Wei Chen, Chun-Hsiung Wang, Ju-Ying Chen, Yu-Chuan Chen, and Yang-Fang Chen
Opt. Lett. 36(4) 514-516 (2011)
Yu-Bin Chen
Opt. Express 17(5) 3130-3140 (2009)
Siyu Yao, Dongying Wang, Yang Yu, Zhenrong Zhang, Linyi Wei, and Junbo Yang
Opt. Express 30(23) 41240-41254 (2022)