Multi-sample rotating rod for physical property measurement system PPMS

Abstract

The invention discloses a multi-sample rotating rod for a physical property measurement system PPMS. The multi-sample rotating rod comprises three sample holders, and can load and measure three samples simultaneously. Two of the sample holders are fixed together back to back and connected with a gear, and can rotate 360 degrees in the vertical plane. The other sample holder is fixed at the bottom, and cannot rotate. The sample holder at the bottom matches an internal interface of a PPMS cavity, and is connected with an internal wire of the cavity. The electrodes of the two back-to-back sample holders on the top are led out from the upper part of a sample rod via wires and through a plurality of Remo plugs with O rings for sealing. Compared with the prior art, the beneficial effects are as follows: the multi-sample rotating rod is perfectly compatible with PPMS; and the multi-sample rotating rod can load and measure three samples simultaneously, the test ability of PPMS is expanded greatly, and the efficiency is triple that of the original sample rod.

Description

technical field [0001] The invention relates to the technical field of precision measuring instruments, in particular to a comprehensive physical property measurement system [0002] Multi-sample rotary rod in PPMS. Background technique [0003] The Comprehensive Physical Property Measurement System (PPMS) is an instrument developed by Quantum Design Company of the United States for basic research on the physical properties of materials. The design concept of the PPMS system is to integrate fully automatic magnetic, electrical, thermal and morphology, and even ferroelectric and dielectric measurement methods on a perfectly controlled extremely low temperature and strong magnetic field platform. This design makes full use of the low temperature and strong magnetic field environment of the whole system, greatly reduces the cost of purchasing instruments for customers, and avoids the tediousness and errors of users in setting up experiments, so that researchers' research ideas...

AI Technical Summary

Problems solved by technology

Because it takes a long time to change the temperature and magnetic field (usually it takes several hours, or even a few days), the PPMS machines of many universities and research institutes are very tight.

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