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Journal article
Mo4Ce4Al7C3 : A nanolamellar ferromagnetic Kondo lattice
Physical review. B, v 102(15)
16 Oct 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Herein we show that Mo4Ce4Al7C3, a recently discovered nanolamellar compound displaying mixed valence, combines Kondo lattice behavior with ferromagnetism. A sizeable magnetization is carried by 3p states of Al as evidenced by a strong x-ray magnetic circular dichroism signal at the K edge of aluminum, whereas no detectable signal was observed at the K edge of carbon and L-2,L-3 edges of molybdenum. These results point out that the ferromagnetic behavior originates in the Ce atoms with 4f(1) electronic configuration lying within the Al planes. The evolution with pressure of the mixed valence of Ce atoms in the Mo-C planes determined via Ce L(3)x-ray-absorption spectra along with the magnetoresistance measurements across the ferromagnetic transition unambiguously reveal a Kondo behavior. Angle-resolved photoemission spectroscopy and density functional theory confirm a certain degree of Ce 4f electron delocalization. More generally, conduction electrons are not restricted to lie in the MoC planes but are also delocalized in the Al planes.
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Details
- Title
- Mo4Ce4Al7C3 : A nanolamellar ferromagnetic Kondo lattice
- Creators
- Maxime Barbier - European Synchrotron Radiation FacilityFabrice Wilhelm - European Synchrotron Radiation FacilityDamir Pinek - Grenoble Alpes UniversityKanji Furuta - Nagoya UniversityTakahiro Ito - Nagoya UniversityYoungsoo Kim - Université Grenoble AlpesMaelys Magnier - Grenoble Alpes UniversityDaniel Braithwaite - Grenoble Alpes UniversityMichal Valiska - Grenoble Alpes UniversityChristine Opagiste - Grenoble Alpes UniversityMichel W. Barsoum - Drexel UniversityPhilippe Ohresser - Soleil SynchrotronEdwige Otero - Soleil SynchrotronPatrick Le Fevre - Soleil SynchrotronFrancois Bertran - Soleil SynchrotronGaston Garbarino - European Synchrotron Radiation FacilityAndrei Rogalev - European Synchrotron Radiation FacilityThierry Ouisse - Grenoble Alpes University
- Publication Details
- Physical review. B, v 102(15)
- Publisher
- Amer Physical Soc
- Number of pages
- 11
- Grant note
- ESRF Flag-ERA JTC 2017 project entitled "MORE-MXenes" CrossDisciplinary Program on Instrumentation and Detection of CEA Universite Grenoble-Alpes through the IDEX-ISP program "MORE-MAX" French Alternative Energies and Atomic Energy Commission
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000578917900001
- Scopus ID
- 2-s2.0-85094559477
- Other Identifier
- 991019167837204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter