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首页> 外文会议>International Conference on Advances in Materials and Manufacturing Processes >Effect of La_2O_3 Addition on the Microstructure and Electrical Properties of Copper-Nickel Manganese Thermistors
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Effect of La_2O_3 Addition on the Microstructure and Electrical Properties of Copper-Nickel Manganese Thermistors

机译：La_2O_3添加对铜镍锰热敏电阻微观结构和电性能的影响

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摘要

The effect of La_2O_3 addition on the microstructure and electrical properties of Mn_(0.75)Ni_(1.25)CuO_4-xLa_2O_3 (0≤x≤0.3) was studied. The crystal structure, phase compositions and morphology were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). The sintered ceramic bodies was typical polycrystalline, with cubic spinel structure of copper manganese oxide, rocksalt structure of nickel copper oxide, along with monoclinic phase of copper oxide and orthorhombic perovskite structure of lanthanum manganese oxide. The obtained ?77K, B_(77K/90K) constant and activation energy of the thermistors were in the range of 3.88-9.29 ? cm, 245-261 K, and 0.0211-0.0225 eV, respectively. This means that the electrical properties can be adjusted to desired values, depending on the La content. So these prepared thermistors were intended to be used under low temperature conditions.
机译：研究了La_2O_3添加了Mn_（0.75）Ni_（1.25）CuO_4-XLA_2O_3（0≤x≤0.3）的微观结构和电性能的影响。通过X射线衍射（XRD），扫描电子显微镜（SEM）和能量分散光谱（EDS）分析晶体结构，相位组合物和形态。烧结陶瓷体是典型的多晶，具有立方尖晶石结构的铜锰氧化物，镍氧化镍的岩石结构以及氧化铜氧化铜的单晶相和镧氧化镧的钙钛矿结构。所获得的？77K，B_（77K / 90K）热敏电阻的恒定和活化能量为3.88-9.29？ CM，245-261 K和0.0211-0.0225 EV。这意味着根据LA含量，可以将电性能调整为所需的值。因此，这些制备的热敏电阻旨在在低温条件下使用。

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