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The addition of magnetic Co0.5Zn0.5Fe2O4 nanoparticles to the superconducting Cu0.5Tl0.5-1223 phase has been used to investigate the electrical resistivity behavior of the composite above the superconducting transition temperature Tc. This was studied according to the opening of spin gap and fluctuation conductivity. The results indicated that the pseudogap temperature (T*) and superconducting fluctuation temperature (Tscf) change by increasing the addition of Co0.5Zn0.5Fe2O4 nanoparticles. It was found that T* is related to hole carrier concentration P and it also depends on the antiferromagnetic fluctuation affected by magnetic nanoparticles. The excess-conductivity analysis showed four different fluctuation regions started from high temperature up to Tc, and they were denoted by short wave (sw), two-dimensional (2D), three-dimensional (3D), and critical (cr) fluctuations. The crossover temperature between 3D and 2D (T3D–2D) in the mean field region was decreased by increasing the addition of Co0.5Zn0.5Fe2O4 nanoparticles, in accordance with the decrease in Tscf with x. The coherence length at 0 K along c-axis ξc(0), effective layer thickness of the 2D system d, and inter-layer coupling strength J were estimated as a function of Co0.5Zn0.5Fe2O4 nanoparticle addition. Moreover, the thermodynamics, lower and upper critical magnetic fields, as well as critical current density have been calculated from the Ginzburg number NG. It was found that the low concentration of Co0.5Zn0.5Fe2O4 nanoparticles up to x = 0.08 wt% improves the superconducting parameters of Cu0.5Tl0.5-1223 phase. On the contrary, these parameters were deteriorated for (Co0.5Zn0.5Fe2O4)x/Cu0.5Tl0.5-1223 composite with x > 0.08 wt%.


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Superconducting parameter determination for (Co0.5Zn0.5Fe2O4)x/Cu0.5Tl0.5-1223 composite

Show Author's information M. ME. BARAKATa( )N. AL-SAYYEDbR. AWADbA. I. ABOU-ALYa
Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt
Physics Department, Faculty of Science, Beirut Arab University, Beirut, Lebanon

Abstract

The addition of magnetic Co0.5Zn0.5Fe2O4 nanoparticles to the superconducting Cu0.5Tl0.5-1223 phase has been used to investigate the electrical resistivity behavior of the composite above the superconducting transition temperature Tc. This was studied according to the opening of spin gap and fluctuation conductivity. The results indicated that the pseudogap temperature (T*) and superconducting fluctuation temperature (Tscf) change by increasing the addition of Co0.5Zn0.5Fe2O4 nanoparticles. It was found that T* is related to hole carrier concentration P and it also depends on the antiferromagnetic fluctuation affected by magnetic nanoparticles. The excess-conductivity analysis showed four different fluctuation regions started from high temperature up to Tc, and they were denoted by short wave (sw), two-dimensional (2D), three-dimensional (3D), and critical (cr) fluctuations. The crossover temperature between 3D and 2D (T3D–2D) in the mean field region was decreased by increasing the addition of Co0.5Zn0.5Fe2O4 nanoparticles, in accordance with the decrease in Tscf with x. The coherence length at 0 K along c-axis ξc(0), effective layer thickness of the 2D system d, and inter-layer coupling strength J were estimated as a function of Co0.5Zn0.5Fe2O4 nanoparticle addition. Moreover, the thermodynamics, lower and upper critical magnetic fields, as well as critical current density have been calculated from the Ginzburg number NG. It was found that the low concentration of Co0.5Zn0.5Fe2O4 nanoparticles up to x = 0.08 wt% improves the superconducting parameters of Cu0.5Tl0.5-1223 phase. On the contrary, these parameters were deteriorated for (Co0.5Zn0.5Fe2O4)x/Cu0.5Tl0.5-1223 composite with x > 0.08 wt%.

Keywords: Co0.5Zn0.5Fe2O4 nanoparticles, Cu0.5Tl0.5-1223 phase, pseudogap temperature, fluctuation conductivity

References(41)

[1]
Tokiwa K, Tanaka Y, Iyo A, et al. High pressure synthesis and characterization of single crystals of CuBa2Ca3Cu4Oy superconductor. Physica C 1998, 298: 209-216.
[2]
Takeuchi T, Iijima Y, Inoue K, et al. Effect of flat-roll forming on critical current density characteristics and microstructure of Nb3Al multifilamentary conductors. IEEE T Appl Supercon 1997, 7: 1529-1532.
[3]
Ihara H. New low anisotropic high-Tc superconductors (Cu, Ag)Ba2Can−1CunO2n+4−y. In Advances in Superconductivity VII. Yamafuji K, Morishita T, Eds. Springer Japan, 1995: 255–260.
DOI
[4]
Ihara H, Sekita Y, Tateai H, et al. Superconducting properties of Cu1-xTlx-1223 [Cu1-xTlx(Ba,Sr)2Ca2Cu3O10-y] thin films. IEEE T Appl Supercon 1999, 9: 1551-1554.
[5]
Khan NA, Sekita Y, Tateai F, et al. Preparation of biaxially oriented TlCu-1234 thin films. Physica C 1999, 320: 39-44.
[6]
Aslamazove LG, Larkin AI. The influence of fluctuation pairing of electrons on the conductivity of normal metal. Phys Lett A 1968, 26: 238-239.
[7]
Thompson RS. Microwave, flux flow, and fluctuation resistance of dirty type-II superconductors. Phys Rev B 1970, 1: 327.
[8]
Lawrence WE, Doniach S. Theory of layer structure superconductor. In Proceedings of the 12th International Conference on Low-Temperature Physics. Kanda E, Ed. Keigaku, Tokyo, 1971: 361.
[9]
Hikami S, Larkin AI. Magnetoresistance of high temperature superconductors. Mod Phys Lett B 1988, 2: 693.
[10]
Qasim I, Waqee-ur-Rehman M, Mumtaz M, et al. Role of anti-ferromagnetic Cr nanoparticles in CuTl-1223 superconducting matrix. J Alloys Compd 2015, 649: 320-326.
[11]
Nadeem K, Hussain G, Mumtaz M, et al. Role of magnetic NiFe2O4 nanoparticles in CuTl-1223 superconductor. Ceram Int 2015, 41: 15041-15047.10.1016/j.ceramint.2015.08.049
[12]
Hussain G, Jabbar A, Qasim I, et al. Activation energy and excess conductivity analysis of (Ag)x/CuTl-1223 nano-superconductor composites. J Appl Phys 2014, 116: 103911.
[13]
Naqib SH. Effects of Zn on superconductivity, stripe order, and pseudogap correlations in YBa2(Cu1−yZny)3O7−δ. Physica C 2012, 476: 10–14.
[14]
Emery VJ, Kivelson SA. Importance of phase fluctuations in superconductors with small superfluid density. Nature 1994, 374: 434–437.
[15]
Chen Q, Kosztin I, Jankó B, et al. Pairing fluctuation theory of superconducting properties in underdoped to overdoped cuprates. Phys Rev Lett 1998, 81: 4708.
[16]
Chubukov AV, Schmalian J. Temperature variation of the pseudogap in underdoped cuprates. Phys Rev B 1998, 57: R11085.
[17]
Anderson PW. The ‘spin gap’ in cuprate superconductors. J Phys: Condens Matter 1996, 8: 10083.
[18]
Lee PA. Pseudogaps in underdoped cuprates. Physica C 1999, 317–318: 194–204.
[19]
Tallon JL, Loram JW. The doping dependence of T*—what is the real high-Tc phase diagram? Physica C 2001, 349: 53–68.
[20]
Khurram AA, Khan NA, Mumtaz M. Intercomparison of fluctuation induced conductivity of Cu0.5Tl0.5Ba2Can−1CunO2n+4−y (n = 2, 3, 4) superconductor thin films. Physica C 2009, 469: 279-282.
[21]
Abou Aly AI, Ibrahim IH, Awad R, et al. Stabilization of Tl-1223 phase by arsenic substitution. J Supercond Nov Magn 2010, 23: 1325-1332.
[22]
Koo JH, Cho G. The spin-gap in high Tc superconductivity. J Phys: Condens Matter 2003, 15: L729.
[23]
Abou-Aly AI, Awad R, Ibrahim IH, et al. Excess conductivity analysis for Tl0.8Hg0.2Ba2Ca2Cu3O9−δ substituted by Sm and Yb. Solid State Commun 2009, 149: 281–285.
[24]
Naqib SH, Cooper JR, Tallon JL, et al. Doping phase diagram of Y1−xCaxBa2(Cu1−yZny)3O7−δ from transport measurements: Tracking the pseudogap below Tc. Phys Rev B 2005, 71: 054502.
[25]
Mohammadizadeh MR, Akhavan M. Pseudogap in Gd-based 123 HTSC. Physica B 2003, 336: 410–419.
[26]
Anderson PW. The resonating valence bond state in La2CuO4 and superconductivity. Science 1987, 235: 1196–1198.
[27]
Lee PA, Nagaosa N, Ng T-K, et al. SU(2) formulation of the tJ model: Application to underdoped cuprates. Phys Rev B 1998, 57: 6003.
[28]
François I, Jaekel C, Kyas G, et al. Influence of Pr doping and oxygen deficiency on the scattering behavior of YBa2Cu3O7 thin films. Phys Rev B 1996, 53: 12502.
[29]
Emery VJ, Kivelson SA, Zachar O. Spin-gap proximity effect mechanism of high-temperature superconductivity. Phys Rev B 1997, 56: 6120.
[30]
Presland MR, Tallon JL, Buckley RG, et al. General trends in oxygen stoichiometry effects on Tc in Bi and Tl superconductors. Physica C 1991, 176: 95–105.
[31]
Ihara H, Tanaka K, Tanaka Y, et al. Mechanism of Tc enhancement in Cu1−xTlx-1234 and -1223 system with Tc > 130 K. Physica C 2000, 341–348: 487488.10.1016/S0921-4534(00)00555-4
[32]
Poddar A, Bandyopadhyay B, Chattopadhyay B. Effects of Co-substitution on superconductivity and transport in Tl2Ba2Ca1−xYx(Cu1−yCoy)2O8+δ. Physica C 2003, 390: 120–126.
[33]
Passos CAC, Passamai Jr. JL, Orlando MTD, et al. An investigation of T* behavior on (Hg,Re)-1223 system. Physica C 2007, 460–462: 1086–1087.
[34]
Hohenberg PC, Halperin BI. Theory of dynamic critical phenomena. Rev Mod Phys 1977, 49: 435.
[35]
Lobb CJ. Critical fluctuations in high-Tc superconductors. Phys Rev B 1987, 36: 3930.
[36]
Rahim M, Khan NA. Suppressed phonon density and Para conductivity of Cd doped Cu0.5Tl0.5Ba2Ca3Cu4−yCdyO12−δ (y = 0, 0.25, 0.5, 0.75) superconductors. J Alloys Compd 2012, 513: 55–60.
[37]
Bardeen J, Cooper LN, Schrieffer JR. Theory of superconductivity. Phys Rev 1957, 108: 1175.
[38]
Khurram AA, Khan NA. A search for a low anisotropic superconductor. J Electromagnetic Analysis & Applications 2010, 2: 63–74.
[39]
Geru II, Ghilan ZI, Dihor IT, et al. Moldavian Journal of the Physical Sciences 2002, N2: 53.
[40]
Snezhko A, Prozorov T, Prozorov R. Magnetic nanoparticles as efficient bulk pinning centers in type-II superconductors. Phys Rev B 2005, 71: 024527.
[41]
Abou-Aly AI, Awad R, Kamal M, et al. Excess conductivity analysis of (Cu0.5Tl0.5)-1223 substituted by Pr and La. J Low Temp Phys 2011, 163: 184–202.
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Publication history

Received: 27 February 2016
Revised: 10 May 2016
Accepted: 15 May 2016
Published: 21 August 2016
Issue date: September 2016

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© The author(s) 2016

Acknowledgements

This work was performed in the Superconductivity and Metallic Glass Lab, Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt, in collaboration with Beirut Arab University, Beirut, Lebanon.

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