Peculiar magnetocaloric properties and critical behavior in antiferromagnetic Tb3Ni with complex magnetic structure
作者： A. Herrero , A. Oleaga , A.F. Gubkin , A. Salazar , N.V. Baranov
DOI: 10.1016/J.JALLCOM.2019.151720
关键词: Condensed matter physics 、 Ferromagnetism 、 Paramagnetism 、 Magnetic refrigeration 、 Magnetic structure 、 Atmospheric temperature range 、 Phase transition 、 Orthorhombic crystal system 、 Materials science 、 Antiferromagnetism
摘要: Abstract A study on the magnetocaloric properties of a Tb3Ni single crystal (which crystallizes in orthorhombic Pnma space group) has been undertaken and combined with character critical behavior its magnetic transitions. It presents two important effects temperature range 3–90 K due to richness variety field induced phase There is conventional (direct) effect maximum at 65 K very competitive properties: | Δ S M p k = 16.6 J/kgK, RCFWHM = 432 J/kg, 50 K span, for μ0ΔH = 5 T, which transition from magnetically ordered state paramagnetic (PM) antiferromagnetic ferromagnetic (AFM-FM) metamagnetic transition. Besides, it also an inverse low presence transitions between AFM FM states responsible ( =19.9 J/kgK, RCFWHM = 245 J/kg, 15 K μ0ΔH = 5 T). At
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