Synthesis and physical properties of FeSe1/2 Te1/2 superconductor

V. P.S. Awana; Anand Pal; Arpita Vajpayee; Monika Mudgel; H. Kishan; Mushahid Husain; R. Zeng; S. Yu; Y. F. Guo; Y. G. Shi; K. Yamaura; E. Takayama-Muromachi

doi:10.1063/1.3366602

Synthesis and physical properties of FeSe1/2 Te1/2 superconductor

V. P.S. Awana, Anand Pal, Arpita Vajpayee, Monika Mudgel, H. Kishan, Mushahid Husain, R. Zeng, S. Yu, Y. F. Guo, Y. G. Shi, K. Yamaura, E. Takayama-Muromachi

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Abstract

One of the most important properties of very recently reported FeSe based superconductors is the robustness of their superconductivity under applied magnetic field. The synthesis and control of superconductivity in FeSe based compounds is rather a difficult task. Synthesis and physical property characterization for optimized superconductivity of FeSe1/2 Te1/2 at 13 K is reported here. The compound crystallized in a tetragonal structure with lattice parameters a=3.8015 (2) and c=6.0280 (4) Å. Magnetization measurements indicated bulk superconductivity with lower critical field (Hc1) of around 180 Oe. By applying Ginzburg-Landau theory, the Hc2 (0) value is estimated to be ∼1840 kOe for the 90% of resistive transition. A heat capacity measurement revealed bulk superconductivity by a hump at T_C near 13 K and an expected decrease in the same was observed under an applied magnetic field.

Original language	English
Article number	09E128
Journal	Journal of Applied Physics
Volume	107
Issue number	9
DOIs	https://doi.org/10.1063/1.3366602
Publication status	Published - 01-05-2010

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1063/1.3366602

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title = "Synthesis and physical properties of FeSe1/2 Te1/2 superconductor",

abstract = "One of the most important properties of very recently reported FeSe based superconductors is the robustness of their superconductivity under applied magnetic field. The synthesis and control of superconductivity in FeSe based compounds is rather a difficult task. Synthesis and physical property characterization for optimized superconductivity of FeSe1/2 Te1/2 at 13 K is reported here. The compound crystallized in a tetragonal structure with lattice parameters a=3.8015 (2) and c=6.0280 (4) {\AA}. Magnetization measurements indicated bulk superconductivity with lower critical field (Hc1) of around 180 Oe. By applying Ginzburg-Landau theory, the Hc2 (0) value is estimated to be ∼1840 kOe for the 90% of resistive transition. A heat capacity measurement revealed bulk superconductivity by a hump at TC near 13 K and an expected decrease in the same was observed under an applied magnetic field.",

author = "Awana, {V. P.S.} and Anand Pal and Arpita Vajpayee and Monika Mudgel and H. Kishan and Mushahid Husain and R. Zeng and S. Yu and Guo, {Y. F.} and Shi, {Y. G.} and K. Yamaura and E. Takayama-Muromachi",

note = "Funding Information: The work is supported by Indo-Japan (DST-JSPS) bilateral exchange research program. V.P.S.A. further thanks NIMS for providing him with the MANA visiting scientist position for three months. Authors from NPL would like to thank Professor Vikram Kumar (DNPL) for his constant encouragement. Anand Pal, Arpita Vajpayee, and Monika Mudgel are thankful to CSIR for providing the financial support during their research.",

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doi = "10.1063/1.3366602",

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AU - Awana, V. P.S.

AU - Pal, Anand

AU - Vajpayee, Arpita

AU - Mudgel, Monika

AU - Kishan, H.

AU - Husain, Mushahid

AU - Zeng, R.

AU - Yu, S.

AU - Guo, Y. F.

AU - Shi, Y. G.

AU - Yamaura, K.

AU - Takayama-Muromachi, E.

N1 - Funding Information: The work is supported by Indo-Japan (DST-JSPS) bilateral exchange research program. V.P.S.A. further thanks NIMS for providing him with the MANA visiting scientist position for three months. Authors from NPL would like to thank Professor Vikram Kumar (DNPL) for his constant encouragement. Anand Pal, Arpita Vajpayee, and Monika Mudgel are thankful to CSIR for providing the financial support during their research.

PY - 2010/5/1

Y1 - 2010/5/1

N2 - One of the most important properties of very recently reported FeSe based superconductors is the robustness of their superconductivity under applied magnetic field. The synthesis and control of superconductivity in FeSe based compounds is rather a difficult task. Synthesis and physical property characterization for optimized superconductivity of FeSe1/2 Te1/2 at 13 K is reported here. The compound crystallized in a tetragonal structure with lattice parameters a=3.8015 (2) and c=6.0280 (4) Å. Magnetization measurements indicated bulk superconductivity with lower critical field (Hc1) of around 180 Oe. By applying Ginzburg-Landau theory, the Hc2 (0) value is estimated to be ∼1840 kOe for the 90% of resistive transition. A heat capacity measurement revealed bulk superconductivity by a hump at TC near 13 K and an expected decrease in the same was observed under an applied magnetic field.

AB - One of the most important properties of very recently reported FeSe based superconductors is the robustness of their superconductivity under applied magnetic field. The synthesis and control of superconductivity in FeSe based compounds is rather a difficult task. Synthesis and physical property characterization for optimized superconductivity of FeSe1/2 Te1/2 at 13 K is reported here. The compound crystallized in a tetragonal structure with lattice parameters a=3.8015 (2) and c=6.0280 (4) Å. Magnetization measurements indicated bulk superconductivity with lower critical field (Hc1) of around 180 Oe. By applying Ginzburg-Landau theory, the Hc2 (0) value is estimated to be ∼1840 kOe for the 90% of resistive transition. A heat capacity measurement revealed bulk superconductivity by a hump at TC near 13 K and an expected decrease in the same was observed under an applied magnetic field.

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Synthesis and physical properties of FeSe1/2 Te1/2 superconductor

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