TENCÉ, Sophie; GAUDIN, Etienne; ISNARD, Olivier; CHEVALIER, Bernard

doi:10.1088/0953-8984/24/29/296002

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TENCÉ, Sophie
Matériaux, Rayonnements, Structure [NEEL - MRS]

GAUDIN, Etienne
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

ISNARD, Olivier
Matériaux, Rayonnements, Structure [NEEL - MRS]

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Journal of Physics: Condensed Matter. 2012, vol. 24, n° 29, p. 296002

IOP Publishing

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The high-temperature form (HT) of the ternary germanide TbTiGe was prepared by melting. The investigation of HT-TbTiGe by x-ray and neutron powder diffractions shows that the compound crystallizes in the tetragonal CeScSi-type structure (space group I4/mmm; a = 404.84(5) and c = 1530.10(9) pm as unit cell parameters). Magnetization and specific heat measurements as well as neutron powder diffraction performed on HT-TbTiGe reveal a ferromagnet having TC = 300(1) K as the Curie temperature; the Tb-moments are aligned along the c-axis. This magnetic ordering is associated with a modest magnetocaloric effect around room temperature. The isothermal magnetic entropy change ΔSm was determined from the magnetization data; ΔSm reaches, respectively, a maximum value of − 4.3 and − 2.0 J K−1 kg−1 for a magnetic field change of 5 and 2 T.< Leer menos

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Magnetism

High pressure

Titanium

Germanium

Terbium

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Magnetic and magnetocaloric properties of the high-temperature modification of TbTiGe

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