Magnetocaloric Effect in Geometrically Frustrated Magnetic Compound HoB_{12}

• Authors: J. Snyman , K. Flachbart , S. Gabani , M. Reiffers , N. Shitsevalova , K. Siemensmeyer , A. Strydom
• Languages of publication: EN

Abstracts

EN

The magnetocaloric effect of frustrated antiferromagnetic HoB_{12} is calculated. The isothermal entropy change Δ S characterising the magnetocaloric effect shows a small positive change upon magnetisation below the transition temperature T_{N}, indicating a small inverse magnetocaloric effect. At T_{N}, Δ S shows clear scaling behaviour with the applied magnetic field. The adiabatic temperature change Δ T shows paramagnetic behaviour above T_{N}, despite strong magnetic correlations that persist in this temperature region. The adiabatic temperature change calculated for HoB_{12} is appreciable.

Keywords

EN

75.30.Sg; 75.40.Cx

Discipline

• 75.30.Sg: Magnetocaloric effect, magnetic cooling(for cryogenics, see 07.20.Mc)
• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 118
• Issue: 5
• Pages: 873-874

Dates

published

2010-11

Contributors

author

J. Snyman

• Physics Department, University of Johannesburg, Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa

author

K. Flachbart

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, SK-04001 Kosice, Slovak Republic

author

S. Gabani

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, SK-04001 Kosice, Slovak Republic

author

M. Reiffers

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, SK-04001 Kosice, Slovak Republic

author

N. Shitsevalova

• I. Frantsevich Inst. for Problems of Materials Science of NASU, 3 Krzhyzhanovsky Str., UA-03680 Kiev, Ukraine

author

K. Siemensmeyer

• Helmholtz Zentrum Berlin, Glienicker Str. 100, D-14109 Berlin, Germany

author

A. Strydom

• Physics Department, University of Johannesburg, Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa

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Identifiers

DOI

10.12693/APhysPolA.118.873