宽温区（80- 650 K）丝、薄膜和块状材料塞贝克系数测量装置
Apparatus for Seebeck coefficient measurement of wire, thin film and bulk materials in the wide temperature range (80-650K)
摘要：
设计并研制了一种塞贝克系数测量装置，该装置能在较宽的温度范围（80 - 650 K）内同时测量低温和高温样品的塞贝克系数。当样品具有不同的几何形状和电子结构时，降低样品保持器和数据收集的技术设计的复杂性一直是在单个仪器中实现的挑战。我们独特设计的带压力探头的样品架可测量不同形状的样品（线材、薄膜和颗粒）以及不同电阻率范围的样品（金属、半导体和绝缘体）。它适用于不同样品尺寸（3-12 mm）的表征。采用由双通道源仪表供电的双加热器配置，用于在整个温度范围内保持样品上的所需恒定温差。两个K型热电偶用于通过利用多通道数字万用表的不同通道同时读取温度和塞贝克电压。系统的校准已经进行了使用康铜，铬镍合金和镍铝合金材料和记录的数据被发现是非常准确的，与以前的报告一致。报道了康铜（丝）和GAN（薄膜）标准样品的塞贝克系数，表明所设计的测量装置具有测量多样品的能力。
英文摘要：
A Seebeck coefficient measurement apparatus has been designed and developed, which is very effective for accurate characterization of different type of samples in a wide temperature range (80 - 650K) simultaneously covering low as well as the high-temperature regime. Reducing the complexity of the technical design of sample holder and data collections has always been challenging to implement in a single instrument when samples are in different geometrical shape and electronic structure. Our unique design of sample holder with pressure probes covers measurements of different samples shapes (wires, thin films and pellets) as well as different resistivity ranges (metals, semiconductors and insulators). It is suitable for characterization of different samples sizes (3-12 mm). A double heater configuration powered by a dual channel source meter is employed for maintaining a desired constant temperature difference across the sample for the whole temperature range. Two K-type thermocouples are used for simultaneously reading of temperatures and Seebeck voltages by utilizing different channels of a multichannel digital multimeter. Calibration of the system has been carried out using constantan, chromel and alumel materials and recorded data is found to be very accurate and consistent with earlier reports. The Seebeck coefficients of standard samples of constantan (wire) and GaN (thin film) have been reported, which shows the measurement capability of designed setup with versatile samples.
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