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首页> 外文期刊>Journal of thermal analysis and calorimetry >Thermal properties of TbB_4 (Conference Paper)
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Thermal properties of TbB_4 (Conference Paper)

机译:Thermal properties of TbB_4 (Conference Paper)

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摘要

This paper presents the results of an experimental study of the temperature dependencies of the heat capacity and the lattice parameters of terbium tetraboride (TbB_4) measured in a temperature range of 2-300 K. This study reveals the anomalies of the above characteristics of TbB_4 at the temperatures of the corresponding magnetic phase transitions (Neel points) T _(N1) = 44 K and T _(N2) = 24 K. The transitions of TbB 4 from the tetragonal crystalline structure into the orthorhombic one at temperatures below T _(N1) were identified. Within our experimental accuracy, no structural transition into the orthorhombic symmetry at temperatures above 80 K was observed. The individual temperature variations of lattice-related and magnetically induced components of the measured properties of TbB_4 are extracted using the data for the diamagnetic LuB _4. As a result, separate contributions of lattice and magnetic subsystems of TbB_4 are determined.

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