### Abstract

The (Tl_{1-x}Cr_{x})Sr_{2}CaCu_{2}O_{7} (Tl-1212) sample with nominal starting composition for x = 0.0, 0.2 and 0.3 were prepared by the solid-state reaction method. The samples were studied by powder x-ray diffraction method and electrical resistance versus temperature measurement. Excess conductivity analysis was carried out using the Aslamazov–Larkin (AL) theory, and the dimension of fluctuation-induced conductivity (λ) was determined. The Lawrence–Donaich (LD) theory was used to calculate the coherence length (ξ_{c}(0)), Josephson coupling (J), and γ = (ξ_{ab}(0)/ξ_{c}(0)) of the superconductive samples. Excess conductivity analysis showed that Cr substitution induced 2D to 3D conductivity transition at the highest transition temperature (T_{2D-3D}) observed at x = 0.3. The calculations based on the Lawrence–Doniach model revealed that the shortest coherence length and weakest inter-plane coupling (J) occurred when x = 0.2. The sample with x = 0.2 and 0.3 showed the Tl-1212 as the major phase. The highest onset temperature of 110 K was observed in the x = 0.2 sample. Our result showed that the formal value of 2.3+ is more important than the Josephson interlayer coupling J in optimizing the transition temperature.

Original language | English |
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Title of host publication | Solid State Science and Technology VI |

Editors | Iskandar Shahrim Mustafa, Saiful Najmee Mohamad, Faris Hidayat Ahmad Suhaimi |

Publisher | Trans Tech Publications Ltd |

Pages | 252-257 |

Number of pages | 6 |

ISBN (Print) | 9783035712728 |

DOIs | |

Publication status | Published - 1 Jan 2019 |

Event | 6th International Conference on Solid State Science and Technology, ICSSST 2017 - Bayan Lepas, Malaysia Duration: 13 Nov 2017 → 16 Nov 2017 |

### Publication series

Name | Solid State Phenomena |
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Volume | 290 SSP |

ISSN (Electronic) | 1662-9779 |

### Conference

Conference | 6th International Conference on Solid State Science and Technology, ICSSST 2017 |
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Country | Malaysia |

City | Bayan Lepas |

Period | 13/11/17 → 16/11/17 |

### Fingerprint

### Keywords

- Cr-substitution
- Fluctuation conductivity
- Superconductors
- Tl-1212 phase

### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics
- Materials Science(all)
- Condensed Matter Physics

### Cite this

_{1-x}cr

_{x})sr

_{2}cacu

_{2}o

_{7}superconductor. In I. Shahrim Mustafa, S. N. Mohamad, & F. H. A. Suhaimi (Eds.),

*Solid State Science and Technology VI*(pp. 252-257). (Solid State Phenomena; Vol. 290 SSP). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/SSP.290.252

**Effect of cr substitution on the formation and fuctuation-induced conductivity analysis of (Tl _{1-x}cr_{x})sr_{2}cacu_{2}o_{7} superconductor.** / Ghazeian, Maryam Ranjbar; Ghoranneviss, Mahmood; Abd. Shukor, Roslan.

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

_{1-x}cr

_{x})sr

_{2}cacu

_{2}o

_{7}superconductor. in I Shahrim Mustafa, SN Mohamad & FHA Suhaimi (eds),

*Solid State Science and Technology VI.*Solid State Phenomena, vol. 290 SSP, Trans Tech Publications Ltd, pp. 252-257, 6th International Conference on Solid State Science and Technology, ICSSST 2017, Bayan Lepas, Malaysia, 13/11/17. https://doi.org/10.4028/www.scientific.net/SSP.290.252

_{1-x}cr

_{x})sr

_{2}cacu

_{2}o

_{7}superconductor. In Shahrim Mustafa I, Mohamad SN, Suhaimi FHA, editors, Solid State Science and Technology VI. Trans Tech Publications Ltd. 2019. p. 252-257. (Solid State Phenomena). https://doi.org/10.4028/www.scientific.net/SSP.290.252

}

TY - GEN

T1 - Effect of cr substitution on the formation and fuctuation-induced conductivity analysis of (Tl1-xcrx)sr2cacu2o7 superconductor

AU - Ghazeian, Maryam Ranjbar

AU - Ghoranneviss, Mahmood

AU - Abd. Shukor, Roslan

PY - 2019/1/1

Y1 - 2019/1/1

N2 - The (Tl1-xCrx)Sr2CaCu2O7 (Tl-1212) sample with nominal starting composition for x = 0.0, 0.2 and 0.3 were prepared by the solid-state reaction method. The samples were studied by powder x-ray diffraction method and electrical resistance versus temperature measurement. Excess conductivity analysis was carried out using the Aslamazov–Larkin (AL) theory, and the dimension of fluctuation-induced conductivity (λ) was determined. The Lawrence–Donaich (LD) theory was used to calculate the coherence length (ξc(0)), Josephson coupling (J), and γ = (ξab(0)/ξc(0)) of the superconductive samples. Excess conductivity analysis showed that Cr substitution induced 2D to 3D conductivity transition at the highest transition temperature (T2D-3D) observed at x = 0.3. The calculations based on the Lawrence–Doniach model revealed that the shortest coherence length and weakest inter-plane coupling (J) occurred when x = 0.2. The sample with x = 0.2 and 0.3 showed the Tl-1212 as the major phase. The highest onset temperature of 110 K was observed in the x = 0.2 sample. Our result showed that the formal value of 2.3+ is more important than the Josephson interlayer coupling J in optimizing the transition temperature.

AB - The (Tl1-xCrx)Sr2CaCu2O7 (Tl-1212) sample with nominal starting composition for x = 0.0, 0.2 and 0.3 were prepared by the solid-state reaction method. The samples were studied by powder x-ray diffraction method and electrical resistance versus temperature measurement. Excess conductivity analysis was carried out using the Aslamazov–Larkin (AL) theory, and the dimension of fluctuation-induced conductivity (λ) was determined. The Lawrence–Donaich (LD) theory was used to calculate the coherence length (ξc(0)), Josephson coupling (J), and γ = (ξab(0)/ξc(0)) of the superconductive samples. Excess conductivity analysis showed that Cr substitution induced 2D to 3D conductivity transition at the highest transition temperature (T2D-3D) observed at x = 0.3. The calculations based on the Lawrence–Doniach model revealed that the shortest coherence length and weakest inter-plane coupling (J) occurred when x = 0.2. The sample with x = 0.2 and 0.3 showed the Tl-1212 as the major phase. The highest onset temperature of 110 K was observed in the x = 0.2 sample. Our result showed that the formal value of 2.3+ is more important than the Josephson interlayer coupling J in optimizing the transition temperature.

KW - Cr-substitution

KW - Fluctuation conductivity

KW - Superconductors

KW - Tl-1212 phase

UR - http://www.scopus.com/inward/record.url?scp=85067806575&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067806575&partnerID=8YFLogxK

U2 - 10.4028/www.scientific.net/SSP.290.252

DO - 10.4028/www.scientific.net/SSP.290.252

M3 - Conference contribution

AN - SCOPUS:85067806575

SN - 9783035712728

T3 - Solid State Phenomena

SP - 252

EP - 257

BT - Solid State Science and Technology VI

A2 - Shahrim Mustafa, Iskandar

A2 - Mohamad, Saiful Najmee

A2 - Suhaimi, Faris Hidayat Ahmad

PB - Trans Tech Publications Ltd

ER -