Upper critical field and AC-Susceptibility studies on FeTe                         0.5                         Se                         0.5                          superconductor

Rayees A. Zargar; Anand Pal; A. K. Hafiz; V. P.S. Awana

doi:10.1063/1.4918191

Upper critical field and AC-Susceptibility studies on FeTe _0.5 Se _0.5 superconductor

Rayees A. Zargar, Anand Pal, A. K. Hafiz, V. P.S. Awana

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this study we present synthesis and characterization of FeTe _0.5 Se _0.5 sample that has been prepared by solid state reaction route by encapsulation of stoichiometric high purity (5N) ingredients in an evacuated quartz tube at 750 °C. The resultant compound is crystallized in single phase tetragonal structure with space group P4/nmm, having lattice parameters a = 3.792(1) Å and c = 6.0081(3) Å. The studied compound is superconducting at below 13K in both magnetic and transport measurements. Further superconductivity is barely affected by external applied magnetic field, giving rise to upper critical field of above 180 Tesla at 0 K. The sample is studied extensively for AC susceptibility measurements in superconducting state. The AC drive field and frequency are varied from 1-13 Oe and 33-9999 Hz respectively. It is concluded that though the grain boundaries of this superconductor are mainly metallic the minor (undetectable in XRD) foreign phases and the role of porosity cannot be ruled out completely. This is because both frequency and amplitude affects slightly the superconductivity coupling temperature of the grains.

Original language	English
Title of host publication	Solid State Physics
Subtitle of host publication	Proceedings of the 59th DAE Solid State Physics Symposium 2014
Editors	R. Chitra, N. K. Sahoo, Dibyendu Bhattacharyya
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735413108
DOIs	https://doi.org/10.1063/1.4918191
Publication status	Published - 24-06-2015
Event	59th DAE Solid State Physics Symposium, SSPS 2014 - Vellore, Tamilnadu, India Duration: 16-12-2014 → 20-12-2014

Publication series

Name	AIP Conference Proceedings
Volume	1665
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	59th DAE Solid State Physics Symposium, SSPS 2014
Country/Territory	India
City	Vellore, Tamilnadu
Period	16-12-14 → 20-12-14

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1063/1.4918191

Cite this

Zargar, R. A., Pal, A., Hafiz, A. K., & Awana, V. P. S. (2015). Upper critical field and AC-Susceptibility studies on FeTe _0.5 Se _0.5 superconductor. In R. Chitra, N. K. Sahoo, & D. Bhattacharyya (Eds.), Solid State Physics: Proceedings of the 59th DAE Solid State Physics Symposium 2014 Article 130043 (AIP Conference Proceedings; Vol. 1665). American Institute of Physics Inc.. https://doi.org/10.1063/1.4918191

Zargar, Rayees A. ; Pal, Anand ; Hafiz, A. K. et al. / Upper critical field and AC-Susceptibility studies on FeTe _0.5 Se _0.5 superconductor. Solid State Physics: Proceedings of the 59th DAE Solid State Physics Symposium 2014. editor / R. Chitra ; N. K. Sahoo ; Dibyendu Bhattacharyya. American Institute of Physics Inc., 2015. (AIP Conference Proceedings).

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abstract = " In this study we present synthesis and characterization of FeTe 0.5 Se 0.5 sample that has been prepared by solid state reaction route by encapsulation of stoichiometric high purity (5N) ingredients in an evacuated quartz tube at 750 °C. The resultant compound is crystallized in single phase tetragonal structure with space group P4/nmm, having lattice parameters a = 3.792(1) {\AA} and c = 6.0081(3) {\AA}. The studied compound is superconducting at below 13K in both magnetic and transport measurements. Further superconductivity is barely affected by external applied magnetic field, giving rise to upper critical field of above 180 Tesla at 0 K. The sample is studied extensively for AC susceptibility measurements in superconducting state. The AC drive field and frequency are varied from 1-13 Oe and 33-9999 Hz respectively. It is concluded that though the grain boundaries of this superconductor are mainly metallic the minor (undetectable in XRD) foreign phases and the role of porosity cannot be ruled out completely. This is because both frequency and amplitude affects slightly the superconductivity coupling temperature of the grains.",

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Zargar, RA, Pal, A, Hafiz, AK & Awana, VPS 2015, Upper critical field and AC-Susceptibility studies on FeTe _0.5 Se _0.5 superconductor. in R Chitra, NK Sahoo & D Bhattacharyya (eds), Solid State Physics: Proceedings of the 59th DAE Solid State Physics Symposium 2014., 130043, AIP Conference Proceedings, vol. 1665, American Institute of Physics Inc., 59th DAE Solid State Physics Symposium, SSPS 2014, Vellore, Tamilnadu, India, 16-12-14. https://doi.org/10.1063/1.4918191

Upper critical field and AC-Susceptibility studies on FeTe _0.5 Se _0.5 superconductor. / Zargar, Rayees A.; Pal, Anand; Hafiz, A. K. et al.
Solid State Physics: Proceedings of the 59th DAE Solid State Physics Symposium 2014. ed. / R. Chitra; N. K. Sahoo; Dibyendu Bhattacharyya. American Institute of Physics Inc., 2015. 130043 (AIP Conference Proceedings; Vol. 1665).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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N2 - In this study we present synthesis and characterization of FeTe 0.5 Se 0.5 sample that has been prepared by solid state reaction route by encapsulation of stoichiometric high purity (5N) ingredients in an evacuated quartz tube at 750 °C. The resultant compound is crystallized in single phase tetragonal structure with space group P4/nmm, having lattice parameters a = 3.792(1) Å and c = 6.0081(3) Å. The studied compound is superconducting at below 13K in both magnetic and transport measurements. Further superconductivity is barely affected by external applied magnetic field, giving rise to upper critical field of above 180 Tesla at 0 K. The sample is studied extensively for AC susceptibility measurements in superconducting state. The AC drive field and frequency are varied from 1-13 Oe and 33-9999 Hz respectively. It is concluded that though the grain boundaries of this superconductor are mainly metallic the minor (undetectable in XRD) foreign phases and the role of porosity cannot be ruled out completely. This is because both frequency and amplitude affects slightly the superconductivity coupling temperature of the grains.

AB - In this study we present synthesis and characterization of FeTe 0.5 Se 0.5 sample that has been prepared by solid state reaction route by encapsulation of stoichiometric high purity (5N) ingredients in an evacuated quartz tube at 750 °C. The resultant compound is crystallized in single phase tetragonal structure with space group P4/nmm, having lattice parameters a = 3.792(1) Å and c = 6.0081(3) Å. The studied compound is superconducting at below 13K in both magnetic and transport measurements. Further superconductivity is barely affected by external applied magnetic field, giving rise to upper critical field of above 180 Tesla at 0 K. The sample is studied extensively for AC susceptibility measurements in superconducting state. The AC drive field and frequency are varied from 1-13 Oe and 33-9999 Hz respectively. It is concluded that though the grain boundaries of this superconductor are mainly metallic the minor (undetectable in XRD) foreign phases and the role of porosity cannot be ruled out completely. This is because both frequency and amplitude affects slightly the superconductivity coupling temperature of the grains.

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Zargar RA, Pal A, Hafiz AK, Awana VPS. Upper critical field and AC-Susceptibility studies on FeTe _0.5 Se _0.5 superconductor. In Chitra R, Sahoo NK, Bhattacharyya D, editors, Solid State Physics: Proceedings of the 59th DAE Solid State Physics Symposium 2014. American Institute of Physics Inc. 2015. 130043. (AIP Conference Proceedings). doi: 10.1063/1.4918191