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Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

Department of Magnetic and Elastic Properties of Solids

Head of Department: Doctor of Sciences
Gennadiy E. Grechnev
tel: +(380)-57-3405011, fax: +(380)-57-3403370, e-mail: grechnev@ilt.kharkov.ua

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Last update
28.08.2012
 

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Studies of pressure effects on magnetic properties

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Staff of Research Group

A. S. Panfilov
e-mail: panfilov@ilt.kharkov.ua
Head of group
Candidate of Sciences (Ph.D.), 
Senior Research Scientist
I. V. Svechkarev
e-mail: svechkarev@ilt.kharkov.ua
Doctor of Sciences, 
Principal Research Scientist, Professor.
I. P. Zhuravleva
Ph.D. Student

The main fields of study

  • Study of pressure effect on the magnetic properties of metals, alloys and intermetallic compounds.

  • Study of magnetic properties and the effects of pressure in the iron-based superconductors.
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    Some main results

    Detailed investigations of magneto-volume effects in transition metals and their alloys in order to reveal main mechanisms of electronic structure modification under pressure.

    Study of pressure effects in magnetic susceptibility of intermediate valence systems, based upon rare-earth elements Ce, Sm, Yb.

    Investigation of magnetic state in magnetically ordered oxides of Mn, Co and Ru.

    Study of anomalous behavior of magnetic susceptibility for High Tc compounds FeSe(Te) in the normal state under pressure.

    Experimental equipment allows to study:

    • The temperature dependence of the magnetic susceptibility in the range 4.2 - 350 K in magnetic field up to 1 T by a Faraday method with a sensitivity of about 10-9 emu

    • A range of the measured values of susceptibility is about (1-1000) 10-7 emu and the accuracy is not worse then 0.5 %.
       
    • The effect of helium gas pressure up to 2 kbar on the magnetic susceptibility in the temperature range 20,3-300 K by a levitation method based on the principle of a free suspension of the sample in strong and non-uniform magnetic field. The relative errors are about 0,03 %. 
    • Another device for the pressure effect study is a pendulum type magnetometer placed directly into the pressure cell, which has the similar technical characteristics. 

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