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首页> 外文期刊>Modern Physics Letters, B. Condensed Matter Physics, Statistical Physics, Applied Physics >Growth mode and properties of Mn-Co-Ni-O NTC thermistor thin films deposited on MgO (100) substrate by laser MBE
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Growth mode and properties of Mn-Co-Ni-O NTC thermistor thin films deposited on MgO (100) substrate by laser MBE

机译：激光MBE沉积在MgO（100）衬底上的Mn-Co-Ni-O NTC热敏电阻薄膜的生长方式和性能

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摘要

Mn1.56Co0.96Ni0.48O4-delta thin films were deposited on MgO (100) substrate using laser molecular beam epitaxy (LMBE) technique at the temperature range of 300-600 degrees C under oxygen partial pressure of 5 x 10(-3) Pa. The effect of growth temperature on microstructure and electrical properties as well as the growth mode were studied using XRD, RHEED, AFM and resistance-temperature measurements. The results showed that all prepared thin films underwent epitaxial growth along the single-(100) orientation direction of the MgO substrate from 3D-island mode to 2D layer-by-layer mode, and exhibited good crystallinity and NTC thermistor behavior. Their resistance at room temperature can be in the range of 10-50 M Omega together with a B-value of about 3300 K, which are desirable for a wide range of practical applications of the NTC thermistors.
机译：在300 x 600摄氏度的温度范围内，氧气分压为5 x 10（-3）的条件下，使用激光分子束外延（LMBE）技术在MgO（100）衬底上沉积Mn1.56Co0.96Ni0.48O4-delta薄膜。 Pa。使用XRD，RHEED，AFM和电阻温度测量研究了生长温度对微观结构和电性能以及生长模式的影响。结果表明，所有制备的薄膜均沿MgO衬底的单（100）取向方向从3D岛模式到2D逐层模式外延生长，并表现出良好的结晶度和NTC热敏电阻性能。它们在室温下的电阻可以在10-50 M Omega的范围内，其B值约为3300 K，这对于NTC热敏电阻的广泛实际应用是理想的。

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