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Superconductivity in self-flux-synthesized single crystalline R2Pt3Ge5(R = La, Ce, Pr) |
| Q Sheng(盛琪)1, J Zhang(张建)1, K Huang(黄百畅)1, Z Ding(丁兆峰)1, X Peng(彭小冉)1, C Tan(谭程)1, L Shu(殳蕾)1,2 |
1 State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China;
2 Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China |
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Abstract In order to study the basic superconductivity properties of Pr2Pt3Ge5, we synthesized the single crystalline samples by the Pt-Ge self-flux method. R2Pt3Ge5 (R = La, Ce) were also grown for a systematic study. Zero-resistivity was observed in both the La- and Pr-based samples below the reported superconducting transition temperatures. However, magnetic susceptibility measurements showed low superconductivity volume fractions in both La2Pt3Ge5 and Pr2Pt3Ge5 (less than 2%). Ce2Pt3Ge5 did not show any signature of superconductivity. From the specific heat measurements, we did not observe a superconducting transition peak in Pr2Pt3Ge5, suggesting that it is not a bulk superconductor. The magnetic susceptibility and heat capacity measurements revealed two antiferromagnetic (AFM) orders in Pr2Pt3Ge5 at TN1 = 4.2 K and TN2=3.5 K, as well as a single AFM transition at TN = 3.8 K in Ce2Pt3Ge5.
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Received: 28 November 2016
Revised: 16 February 2017
Accepted manuscript online:
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PACS:
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74.25.Ha
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(Magnetic properties including vortex structures and related phenomena)
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75.50.Ee
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(Antiferromagnetics)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11204041) and STCSM of China (Grant No. 15XD1500200). |
Corresponding Authors:
L Shu
E-mail: leishu@fudan.edu.cn
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Cite this article:
Q Sheng(盛琪), J Zhang(张建), K Huang(黄百畅), Z Ding(丁兆峰), X Peng(彭小冉), C Tan(谭程), L Shu(殳蕾) Superconductivity in self-flux-synthesized single crystalline R2Pt3Ge5(R = La, Ce, Pr) 2017 Chin. Phys. B 26 057401
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