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Electromechanical magnetization measurements at ultralow temperatures and high magnetic fields

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2 Author(s)
Sakon, Takuo ; Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan ; Motokawa, Mitsuhiro

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A new magnetization measurement system, which is designed to be used in ultralow temperatures and high magnetic fields, has been developed. In this equipment, a small capacitor is used and its capacitance changes by the displacement of an electrode due to force acting on a magnetic material placed on the electrode. The most significant point of this equipment is that a Ni plate is placed just below the capacitor to make a gradient field at the sample position instead of usual field-gradient coils installed in a magnet. Using this system, we have studied precise magnetization measurements on rare-earth monopnictides Ce0.9La0.1Sb and a uranium heavy Fermion superconductor UPd2Al3 at temperature down to 0.5 K in high magnetic fields provided by a superconducting magnet and a hybrid magnet. © 2000 American Institute of Physics.

Published in:

Review of Scientific Instruments  (Volume:71 ,  Issue: 9 )