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Magnetic phase transitions in TbAuIn compound |
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| Authors: | ? Gondek A Szytu?a W Warkocki M Gutowska |
| Institution: | a Department of Physics, Cracow Agricultural University, Mickiewicza 21, 31-120 Kraków, Poland b M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland c H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland d Institute of Physics, Polish Academy of Sciences, Lotników 32/46, 02-668 Warszawa, Poland |
| Abstract: | Magnetic properties of frustrated antiferromagnet TbAuIn are investigated by AC susceptibility, resistivity as well as specific heat measurements. In temperature dependence of the susceptibility two anomalies are visible, one at 33 K and another at 48 K. According to neutron diffraction studies the Néel temperature is 35 K. The second anomaly in the AC susceptibility seems to be attributed to antiferromagnetic cluster-glass state of Tb magnetic moments. The resistivity measurements confirm that TbAuIn exhibits long-range magnetic order below 35 K, moreover they reveal an anomalous behaviour above that temperature. However in the temperature dependence of the specific heat only one anomaly at 30 K is visible. The low temperature behaviour of susceptibility, resistivity and specific heat of the investigated antiferromagnetic material can be described, with a good accuracy, within the spin-wave theory with linear dispersion relation. |
| Keywords: | 65 40 &minus b 72 15 &minus v 75 30 &minus m |
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