钇铝石榴石上Mn-Co-Ni-O薄膜的制备及其相关特性表征

Deposition of Mn-Co-Ni-O thin films on Y-Al-O garnet via chemical solution method and its characterization

利用化学溶液法在具有良好导热性和红外透过性的钇铝石榴石单晶衬底上成功制备了具有单一尖晶石相的Mn1.56Co0.96Ni0.48O4薄膜.傅里叶红外光谱测试表明薄膜在2.5~5μm波段具有明显的吸收带.通过研究其电阻-温度关系并利用最近邻跳跃模型进行拟合,得到薄膜的特征温度约为2 530 K,室温下的负电阻温度系数约为-3.66%K-1.

Mn1. 56Co0. 96Ni0. 48O4 thin films have been successfully deposited on Y-Al-O garnet（ YAG） single crystal substrate via chemical solution method. X-Ray diffraction shows the films are of single spinel phase. Infrared spectrum characterization indicates the film has an obvious absorption band at 2.5~5 μm. M oreover,the resistance-temperature dependence of the film was also studied. Using nearest-neighbor hopping model,we found that the characteristic temperature T0 is about 2530 K and the temperature coefficient at 300K is about-3.66% K-1. All these results demonstrate that the M CN films deposited on YAG have potential applications in temperature sensors or near-infrared detectors under extreme conditions.