| dc.creator | Chi, Ji | |
| dc.creator | Zheng, Xiang | |
| dc.creator | Rodriguez, Sergio Y. | |
| dc.creator | Li, Yang | |
| dc.creator | Gou, Weiping | |
| dc.creator | Rathnayaka, K. D. D. | |
| dc.creator | Ross, Joseph H. Jr. | |
| dc.date.accessioned | 2016-01-12T00:05:38Z | |
| dc.date.available | 2016-01-12T00:05:38Z | |
| dc.date.issued | 2010 | |
| dc.identifier.citation | Phys. Rev. B 82, 174419 (2010) | en |
| dc.identifier.uri | https://hdl.handle.net/1969.1/156017 | |
| dc.description.abstract | Fe2Al5 contains a Fe-Al matrix through which are threaded disordered one-dimensional chains of overlapping Al sites. We report magnetic, nuclear-magnetic-resonance (NMR), and specific-heat measurements addressing its magnetic and vibrational properties. The Curie-type susceptibility is found to be due to dilute moments, likely due to wrong-site Fe atoms. A27l NMR shift and spin-lattice relaxation measurements confirm these to be indirectly coupled through a Ruderman-Kittel-Kasuya-Yoshida-type interaction. Specific-heat results indicate a large density of low-energy vibrational modes. These excitations generate a linear-T contribution to the specific heat, which however freezes out below about 10 K. These results are attributed to the presence of anharmonic vibrational modes associated with the disordered structural chains. | en |
| dc.description.sponsorship | Robert A. Welch Foundation, Grant No. A-1526
National Science Foundation Grant No. DMR-0315476 | en |
| dc.language.iso | en_US | |
| dc.publisher | American Physical Society | |
| dc.title | Dilute magnetism and vibrational entropy in Fe2Al5 | en |
| dc.type | Article | en |
| local.department | Physics and Astronomy | en |
| dc.identifier.doi | 10.1103/PhysRevB.82.174419 | |
