Itinerant electron metamagnetism in LaCo9Si4
- Author(s)
- Herwig Michor, M El-Hagary, Massimiliano Della Mea, Martin W. Pieper, Michael Reissner, Gerfried Hilscher, S Khmelevskyi, Peter Mohn, Günter Schneider, Gerald Giester, Peter Franz Rogl
- Abstract
The strongly exchange enhanced Pauli paramagnet LaCo9Si 4 is found to exhibit an itinerant metamagnetic phase transition with indications for metamagnetic quantum criticality. Our investigation comprises magnetic, specific heat, and nuclear magnetic resonance measurements as well as ab initio electronic structure calculations. The critical field is about 3.5 T for H||c and 6 T for H?c, which is the lowest value ever found for rare earth intermetallic compounds. In the ferromagnetic state there appears a moment of about 0.2 œB/Co at the 16k Co-sites, but significantly smaller moments at the 4d and 16l Co-sites.
- Organisation(s)
- Department of Mineralogy and Crystallography, Department of Physical Chemistry
- External organisation(s)
- Technische Universität Wien, Center for Computational Materials Science, CMS
- Journal
- Physical Review B
- Volume
- 69
- Pages
- 814041-814044
- No. of pages
- 4
- ISSN
- 1098-0121
- DOI
- https://doi.org/10.1103/PhysRevB.69.081404
- Publication date
- 2004
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 1051 Geology, Mineralogy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/4c207320-1a97-4111-adfd-536316b2a660