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Journal article
Rare-earth (RE) nanolaminates Mo4RE4Al7C3 featuring ferromagnetism and mixed-valence states
Physical review materials, v 2(11), p114401
05 Nov 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Rare-earth-based (RE) nanolaminates have attracted attention recently because of their complicated magnetism and their potential as precursors for strongly correlated two-dimensional materials. In this work, we synthesized a class of nanolaminates with a Mo4RE4Al7C3 chemistry, where RE = Ce or Pr. Powder samples of both phases were characterized with respect to structure and composition. Single crystals of Mo4Ce4Al7C3 were used for magnetization measurements. The crystal structure was investigated by means of x-ray diffraction and scanning transmission electron microscopy. Magnetization analysis reveals a ferromagnetic ground state with a Curie temperature of similar to 10.5 K. X-ray absorption near-edge structure provides experimental evidence that Ce is in a mixed-valence state. X-ray magnetic circular dichroism shows that only the Ce atoms with 4f(1) configuration occupying one of the two possible sites are ferromagnetically coupled, with a saturation moment of similar to 1.2 mu(B) per atom. We thus classify Mo4Ce4Al7C3 as a ferromagnetic, mixed-valence compound.
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Details
- Title
- Rare-earth (RE) nanolaminates Mo4RE4Al7C3 featuring ferromagnetism and mixed-valence states
- Creators
- Q. Tao - Linköping UniversityThierry Ouisse - Grenoble Alpes UniversityDamir Pinek - Grenoble Alpes UniversityOdette Chaix-Pluchery - Grenoble Alpes UniversityChristine Opagiste - Institut NéelFabrice Wilhelm - European Synchrotron Radiation FacilityA. Rogalev - European Synchrotron Radiation FacilityLaurent Jouffret - Institute of Chemistry of Clermont-FerrandAudrey Champagne - Université Catholique de Louvain = Catholic University of LouvainJ.C. Charlier - Université Catholique de LouvainJ. Lu - Linköping UniversityLars Hultman - Linköping UniversityMichel W. Barsoum - Drexel UniversityJohanna Rosen - Linköping University
- Publication Details
- Physical review materials, v 2(11), p114401
- Publisher
- American Physical Society
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000450570100003
- Scopus ID
- 2-s2.0-85060643689
- Other Identifier
- 991019168105304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary