Electric transport property measuring device and measuring method

Abstract

The invention discloses an electric transport property measuring device. The electric transport property measuring device comprises a platform body, a four-probe lifting system and a sample stage rotating system. The platform body comprises an upper platform, a lower platform and lifting channels. The four-probe lifting system comprises probe assemblies and a stepped motor. The sample stage rotating system comprises a transmission sample stage, a rotary shaft and a driving part. The invention further discloses an electric transport property measuring method. Anisotropic electric transport properties of crystalline materials are measured through multiple steps. The electric transport property measuring device and measuring method solve the problem that the anisotropic electric transport properties can not be measured conveniently through a traditional four-point probe transport testing device, greatly simplify operation process and improve experiment efficiency.

Description

technical field [0001] The invention relates to a measuring device and a measuring method, in particular to a measuring device and a measuring method for electrical transport characteristics. Background technique [0002] The structure and physical properties of many crystalline materials have varying degrees of anisotropy, which has become the focus of academic basic research and material application development. Anisotropic electrical transport characteristics are an important characteristic of crystalline materials. The traditional four-probe device includes four probes and a sample stage, and the sample stage is fixed. When using this device to measure anisotropic electrical transport properties, it is necessary to prepare multiple materials, and then place the probes It is arranged along different crystal orientations, so as to measure the electrical transport characteristics of the material on different crystal orientations; on the other hand, because each probe is con...

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Problems solved by technology

The traditional four-probe device includes four probes and a sample stage, and the sample stage is fixed. When using this device to measure anisotropic electrical transport properties, it is necessary to prepare multiple materials, and then place the probes It is arranged along different crystal orientations, so as to measure the electrical transport characteristics of the material on different crystal orientations; on the other hand, because each probe is controlled by its own adjustment component, when adjusting the position of each probe on the crystal It is necessary to adjust each probe in turn, which makes the actual operation process more time-consuming and laborious, and in order to eliminate the inhomogeneity of material growth, statistical analysis is required, resulting in the extension of the experimental cycle

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