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Metallic conductivity and a Ca substitution study of NaRh2O4 comprising a double chain system | | K. Yamaura
; Q. Huang
; M. Moldovan
; D.P. Young
; X.L. Wang
; E. Takayama-Muromachi
; | | Date: |
1 Aug 2005 | | Subject: | Strongly Correlated Electrons; Materials Science | cond-mat.str-el cond-mat.mtrl-sci | | Affiliation: | NIMS), Q. Huang (NIST), M. Moldovan (Louisiana SU), D.P. Young (Louisiana SU), X.L. Wang (U Wollongong), E. Takayama-Muromachi (NIMS | | Abstract: | The metallic compound NaRh2O4 forms a full range solid solution to the insulating phase CaRh2O4. At a Na concentration of 0.25 moles per formula unit, we found an unexpected contribution to the specific heat at low temperature [K. Yamaura et al. Chem. Mater. 17 (2005) 359]. To address this issue, specific heat and ac and dc magnetic susceptibilities were additionally measured under a variety of conditions for the Na0.25 sample. A new set of data clearly indicate the additional specific heat is magnetic in origin; however, the magnetic entropy is fairly small (~1 % of Schottky term for a simple splitting doublet), and there is no other evidence to suggest that a magnetic phase transition is responsible for the anomalous specific heat. | | Source: | arXiv, cond-mat/0508032 | | Services: | Forum | Review | PDF | Favorites | |
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