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Magnetic and Optical Properties of Zn1-xMnxO Thin Films Prepared by Using Ultrasonic Spray Pyrolysis
Shavkat U. Yuldashev,전희창,강태원,율다세프,Irina V. Khvan,Vasiliy O. Pelenovich 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.1
Diluted magnetic semiconductor Zn1-xMnxO (x = 0.05) thin films were prepared using ultrasonic spray pyrolysis. The films were additionally doped with nitrogen in order to obtain a p-type conductivity. Aqueous solutions of zinc acetate (0.5 mol/l), manganese acetate (0.5 mol/l) and ammonium acetate (2.5 mol/l) were used as sources of Zn, Mn and N, respectively. The hole concentration in the nitrogen-doped lms was in the range of 1015 -1018 cm-3 at room temperature. The dependence of the magnetization on the magnetic field (M-H) for the highly nitrogen-doped Zn0.95Mn0.05O sample showed a hysteresis loop at low temperatures. A Curie temperature of around 80 K for the sample with a hole concentration of 1018 cm-3 was determined from the temperature dependence of the magnetization.