Magnetic frustration in the antiferromagnetic Kondo lattice YbPtAl: Anomalous magnetic behavior at high pressures |
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| Affiliation: | 1. II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, 50937 Köln, Germany;2. Département de Recherche Fondamentale sur la Matière Condensée, CEA/Grenoble, rue des Martyrs, 38054 Grenoble cedex 9, France;3. Institut für Festkörperphysik, TH Darmstadt, 64289 Darmstadt, Germany;1. Institute of Low Temperature and Structure Research, PAS, 50-950, Wroclaw, Poland;2. Baikov Institute of Metallurgy and Materials Science, RAS, 119991, Moscow, Russia;3. IFW Dresden, Institute of Metallic Materials, D-01171, Dresden, Germany;4. Instituto de Física Armando Dias Tavares-Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, 20550-013, Rio de Janeiro, RJ, Brazil;1. Department of Physics, Abbottabad University of Science and Technology, Havelian, Abbottabad, Pakistan;2. Center for Computational Materials Science, University of Malakand, Pakistan;3. Department of Physics, Faculty of Sciences, University of Isfahan, HezarGerib Avenue, Isfahan 81744-73441, Iran;1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Sendai, 980-8577 Japan;1. Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, 121 16, Prague 2, Czech Republic;2. Charles University, Faculty of Mathematics and Physics, Department of Physics of Materials, Ke Karlovu 5, 121 16, Prague 2, Czech Republic;1. Department of Materials Science & Technology, Tokyo University of Science, 6-3-1, Niijyuku, Katsushika-ku, Tokyo, 125-8585, Japan;2. Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, N1-28, 2-12-1, Ookayama, Meguro-ku, Tokyo, 152-8550, Japan;3. Department of Mechanical Engineering, Tokyo University of Science, 6-3-1, Niijyuku, Katsushika-ku, Tokyo, 125-8585, Japan;4. Advanced Composite Research Center, Institute of Aeronautical Technology, Japan Aerospace Exploration Agency, 6-13-1, Osawa, Mitaka-shi, 181-0015, Tokyo, Japan;1. M.V. Lomonosov Moscow State University, Leninskie gori, Moscow 119991, Russia;2. Department of Physics, Gebze Technical University, Gebze, 41400 Kocaeli, Turkey;3. A.M. Prokhorov General Physics Institute, Vavilova St., 38, Moscow 119991, Russia |
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| Abstract: | We have investigated the magnetic and electronic properties of the antiferromagnetic Kondo lattice YbPtAl using the 170Yb Mössbauer effect at ambient pressure (1.8<T<10 K), electrical resistance (1.8<T<300 K) and X-ray diffraction (T=300 K) techniques at high pressures up to 26 GPa. We find a complex magnetic state in YbPtAl at ambient pressure and an unusual volume-induced change of TN. It is suggested, that the anomalous volume dependence of TN is due to the interplay between frustrated anisotropic exchange interactions and magnetocrystalline anisotropy. The magnetic frustration originates from the topology of the crystal lattice. |
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