Three terminal capacitance technique for magnetostriction and thermal expansion measurements

B. Kundys, Y. Bukhantsev, S. Vasiliev, Dmytro Kundys, M. Berkowski, V. P. Dyakonov

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

An instrument has been constructed to measure a large range of magnetostriction and thermal expansion between room temperature and 4 K in a superconductive split-coil magnet, that allows investigation in magnetic fields up to 12 T. The very small bulk samples (up to 1 mm in size) as well as big ones (up to 13 mm) of the irregular form can be measured. The possibility of magnetostriction investigation in thin films is shown. A general account is given of both electrical and the mechanical aspects of the design of capacitance cell and their associated electronic circuitry. A simple lever device is proposed to increase the sensitivity twice. The resulting obtained sensitivity is 0.5 A. The performance of the technique is illustrated by some preliminary measurements of the magnetostriction of superconducting MgB(2), thermal expansion of (La(0.8)Ba(0.2))(0.93)MnO(3) single crystal and magnetoelastic behavior of the Ni/Si(111) and La(0.7)Sr(0.3)CoO(3)/SAT(0.7)CAT(0.1)LA(0.2)(001) cantilevers.

Original languageEnglish
Pages (from-to)2192-2196
Number of pages5
JournalReview of Scientific Instruments
Volume75
Issue number6
DOIs
Publication statusPublished - Jun 2004

Keywords

  • AMORPHOUS FECOSIB WIRE
  • THIN-FILMS
  • MAGNETOELASTIC PROPERTIES
  • DEPENDENT IMPEDANCE
  • RIBBON
  • MGB2

Cite this