Diluted Magnetic Zn_(1-x)Mn_xO Semiconductor Synthesized by Hydrothermal Method

摘要

Diluted magnetic semiconductor Zn_(1-x)Mn_xO crystals were synthesized at 430°C for 24 h by hydrothermal method. 3 mol·L~(-1) KOH was used as the mineralizer, and the fill factor is 35%. The obtained crystals show a ZnO wurtzite structure, with positive polar faces{0001}, negative polar faces{0001}, p faces{1011} and -p faces{1011} exposed. The height of the crystal is 5-30μm and radius-height ratio is 2:1. Mn atom concentration of 2.6% (x=0.026) was determined using X-ray energy dispersive spectroscopy (EDS). The crystals show low-temperature ferromagnetism with Curie temperature of 50 K.