Thakur, Gohil Singh ; Selvan, Ganesan Kalai ; Haque, Zeba ; Gupta, Laxmi Chand ; Samal, Saroj Lochan ; Arumugam, Sonachalam ; Ganguli, Ashok Kumar (2015) Synthesis and Properties of SmO0.5F0.5BiS2 and Enhancement in Tc in La1–ySmyO0.5F0.5BiS2 Inorganic Chemistry, 54 (3). pp. 1076-1081. ISSN 0020-1669
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ic5023938
Related URL: http://dx.doi.org/10.1021/ic5023938
Abstract
The crystal structure and properties of a new member of the oxybismuth sulfide family SmO0.5F0.5BiS2 are reported here. The compounds SmO1–xFxBiS2 (x = 0.0 and 0.5) are isostructural with LaOBiS2 and crystallize in the CeOBiS2-type structure (P4/nmm). Sm substitution in LaO0.5F0.5BiS2 (La1–ySmyO0.5F0.5BiS2) leads to a gradual decrease in the a-lattice constant; however, the c-lattice constant does not show such a gradual trend. Enhancement in Tc is achieved upon partial substitution of La by the smaller Sm ion. A maximum Tc ∼ 4.6 K was observed for composition with y = 0.8. Disobeying this trend, Tc disappears unexpectedly in the composition SmO0.5F0.5BiS2 (y = 1.0). Both the undoped and F-doped (x = 0.0 and 0.5) compounds are paramagnetic, exhibiting semiconducting behavior down to 2 K.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 111624 |
| Deposited On: | 28 Sep 2017 12:23 |
| Last Modified: | 28 Sep 2017 12:23 |
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