An Automated Ac Susceptibility Set up Fabricated Using a Closed-Cycle Helium Refrigerator

TL;DR

This paper presents the design and operation of an automated AC susceptibility measurement setup utilizing a closed-cycle helium refrigerator, capable of measuring magnetic susceptibilities from 2 K to 300 K with high sensitivity.

Contribution

It introduces a novel automated AC susceptibility setup with a wide temperature range and high sensitivity, suitable for various magnetic materials.

Findings

Effective measurement of linear and nonlinear susceptibilities.

Temperature range of 2 K to 300 K achieved.

Sensitivity of 10^-3 emu demonstrated.

Abstract

We have described here the design and operation of an automated ac susceptibility set up using a closed cycle helium refrigerator. This set up is useful for measuring linear and nonlinear magnetic susceptibilities of various magnetic materials. The working temperature range is 2 K to 300 K. The overall sensitivity of the set up is found to be 10-3 emu.