Effect of hydrostatic pressure on the Curie temperature of the Heusler alloys Ni2MnZ(Z = Al,Ga, In,Sn and Sb) |
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| Institution: | 1. Department of Physics, University of Science and Technology Beijing, Beijing, 100083, China;2. Institute for Superconducting and Electronic Materials, Innovation Campus, University of Wollongong, Squires Way, North Wollongong, NSW, 2500, Australia;1. Faculty of Science, Shinshu University, Matsumoto, 390-8621, Japan;2. Kurume Institute of Technology, Kurume, 830-0052, Japan;3. Graduate School of Science and Engineering, Yamagata University, Yonezawa, 992-8510, Japan;4. Research Institute for Engineering and Technology, Tohoku Gakuin University, Tagajo, 985-8537, Japan;1. Department of Physics, Indian Institute of Technology Kharagpur, Khargapur 721302, India;2. Sensors Development Area, Space Applications Centre, ISRO, Ahmedabad 380015, India;3. Department of Physics, Indian Institute of Technology Patna, Patna 800013, India;1. Laboratory of Solid Physics, Faculty of Sciences, Sidi Mohamed Ben Abdellah University, BP 1796, Fes, Morocco;2. Laboratory of Materials, Processes, Environment and Quality, Faculty of Sciences, Cady Ayyed University, National School of Applied Sciences PB 63, 46000, Safi, Morocco;1. National University of Science and Technology ”MISiS”, Moscow, 119049, Russia;2. Chelyabinsk State University, Chelyabinsk, 454001, Russia;3. A.M. Prokhorov General Physics Institute of RAS, Moscow, 119049, Russia;4. South Ural State University, Chelyabinsk, 454080, Russia;5. Immanuel Kant Baltic Federal University, Kaliningrad, Russia |
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| Abstract: | The pressure derivative of the Curie temperature dTc/dp of the Heusler alloys Ni2MnZ(Z = Al, Ga, In, Sn and Sb) has been obtained from the results of temperature dependence of initial permeability under pressure up to about 6 kbar. For all alloys the Curie temperatures increase linearly with increasing pressure at the rate of dTc/dp: +0.7 K/kbar for Ni2MnAl, +1.0 K/kbar for Ni2MnGa, +0.9 K/kbar for Ni2MnIn, +1.4 K/kbar for Ni2MnSn and +4.1 K/kbar for Ni2MnSb. On the basis of these results, the interatomic dependence of the exchange interaction for Heusler alloys is discussed. The magnetic susceptibilities of those alloys are also reported. |
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