Journal of Advanced Ceramics

, Volume 5, Issue 2, pp 159–166 | Cite as

Dielectric properties of (Zn) x /CuTl-1223 nanoparticle-superconductor composites

  • M. MumtazEmail author
  • Liaqat Ali
  • Shoaib Azeem
  • Saad Ullah
  • G. Hussain
  • M. W. Rabbani
  • Abdul Jabbar
  • K. Nadeem
Open Access
Research Article


Zinc (Zn) nanoparticles and (Cu0.5Tl0.5)Ba2Ca2Cu3O10−δ (CuTl-1223) superconducting phase were prepared separately by sol-gel and solid-state reaction methods, respectively. Zn nanoparticles were added in CuTl-1223 superconducting matrix with different weight percentage during the final sintering process to obtain (Zn) x /CuTl-1223 (x = 02-4 wt%) nanoparticle-superconductor composites. The effect of Zn nanoparticles on structural, morphological, superconducting, and dielectric properties of CuTl-1223 phase was investigated. The addition of these Zn nanoparticles has not affected the crystal structure of host CuTl-1223 superconducting phase. Superconducting properties were enhanced after the addition of Zn nanoparticles up to certain optimum content (i.e., x = 1 wt%), which were due to improved inter-grain connectivity by healing up of micro-cracks and reduction of defects like oxygen deficiencies, etc. The activation energy (U) was increased after the addition of Zn nanoparticles in CuTl-1223 phase. The dielectric properties of these samples (i.e., dielectric constant, dielectric loss) were determined by experimentally measured capacitance (C) and conductance (G) as a function of frequency at room temperature. The addition of metallic Zn nanoparticles in CuTl-1223 matrix has overall suppressed the dielectric parameters of (Zn) x /CuTl-1223 nanoparticle-superconductor composites. The metallic Zn nanoparticles played a significant role in inter-grain couplings by filling the voids and pores.


(Zn)x/CuTl-1223 nanoparticle-superconductor composites dielectric properties activation energy 


  1. [1]
    Yamamoto H, Tanaka K, Tokiwa K, et al. Synthesis of Cu1−xTlxBa2Ca2Cu3O11−y (x∼0.7) superconductor by hot press. Physica C 1998, 302: 137–142.CrossRefGoogle Scholar
  2. [2]
    Awad R. Enhancement the formation of (Cu, Tl)-1223 superconducting phase by Cd-substitution. J Alloys Compd 2009, 474: 517–521.CrossRefGoogle Scholar
  3. [3]
    Ihara H, Tanaka K, Tanaka Y, et al. Mechanism of T c enhancement in Cu1−xTlx-1234 and -1223 system with T c > 130 K. Physica C 2000, 3412-348: 487–488.CrossRefGoogle Scholar
  4. [4]
    Ihara H. How to achieve the best performance superconductor based on Cu-1234. Physica C 2001, 364–365: 289–297.CrossRefGoogle Scholar
  5. [5]
    Tanaka K, Iyo A, Terada N, et al. Tl valence change and T c enhancement (> 130 K) in (Cu,Tl)Ba2Ca2Cu3Oy due to nitrogen annealing. Phys Rev B 2001, 63: 064508.CrossRefGoogle Scholar
  6. [6]
    Çavdar Ş, Koralay H, Tuğluoğlu N, et al. Frequency-dependent dielectric characteristics of Tl-Ba-Ca-Cu-O bulk superconductor. Supercond Sci Technol 2005, 18: 1204.CrossRefGoogle Scholar
  7. [7]
    Mohammed NH. Effect of MgO nano-oxide additions on the superconductivity and dielectric properties of Cu0.25Tl0.75Ba2Ca3Cu4O12−δ superconducting phase. J Supercond Nov Magn 2012, 25: 45–53.CrossRefGoogle Scholar
  8. [8]
    Nkum RK, Gyekye MO, Boakye F. Normal-state dielectric and transport properties of In-doped Bi-Pb-Sr-Ca-Cu-O. Solid State Commun 2002, 122: 569–573.CrossRefGoogle Scholar
  9. [9]
    Younis A, Khan NA, Bajwa NU. Dielectric properties of Cu0.5Tl0.5Ba2Ca3Cu4−yZnyO12−δ (y = 0, 3) superconductors. J Korean Phys Soc 2010, 57: 1437–1443.CrossRefGoogle Scholar
  10. [10]
    Mumtaz M, Khan NA, Khurram AA. Enhanced superconducting properties of Cu0.5(Tl0.5−yHgy)Ba2Ca3Cu4O12−δ (y = 0, 0.15, 0.25, 0.35) superconductor. J Alloys Compd 2008, 452: 435–440.CrossRefGoogle Scholar
  11. [11]
    Khan NA, Husnain G, Sabeeh K. Enhanced superconductivity in Cu0.5Tl0.5Ba2Can−1−yBeyCunO2n+4−δ (n = 3, 4 and y = 0. 7, 1.5, 1.7, 2.0) system with oxygen doping. J Phys Chem Solids 2006, 67: 1841–1849.CrossRefGoogle Scholar
  12. [12]
    Ihara H, Tokiwa K, Tanaka K, et al. Cu1−xTlxBa2Ca3Cu4O12−y (Cu1−xTlx-1234) superconductor with T c = 126 K. Physica C 1997, 2822-287: 957–958.CrossRefGoogle Scholar
  13. [13]
    Ben-Ishai P, Sader E, Feldman Y, et al. Dielectric properties of Na0.7CoO2 and of the superconducting Na0.3CoO2·1.3H2O. J Supercond 2005, 18: 455–459.CrossRefGoogle Scholar
  14. [14]
    Kamalasanan MN, Kumar ND, Chandra S. Dielectric and ferroelectric properties of BaTiO3 thin films grown by the sol-gel process. J Appl Phys 1993, 74: 5679.CrossRefGoogle Scholar
  15. [15]
    Xu X, Jiao Z, Fu M, et al. Dielectric studies in a layered Ba based Bi-2222 cuprate Bi2Ba2Nd1.6Ce0.4Cu2O10+δ. Physica C 2005, 417: 166–170.CrossRefGoogle Scholar
  16. [16]
    Çavdar S, Koralay H, Altindal S. Effect of vanadium substitution on the dielectric properties of glass ceramic Bi-2212 superconductor. J Low Temp Phys 2011, 164: 102–114.CrossRefGoogle Scholar
  17. [17]
    Annabi M, Bouchoucha I, Azzouz FB, et al. Effect of ZnO and Zn0.95Mn0.05O nano-particle inclusions on YBCO polycrystalline pinning properties. IOP Conf Ser: Mater Sci Eng 2010, 13: 012009.CrossRefGoogle Scholar
  18. [18]
    Mumtaz M, Khan NA. Dielectric properties of Cu0.5Tl0.5Ba2Ca3Cu4O12−δ bulk superconductor. Physica C 2009, 469: 728–731.CrossRefGoogle Scholar
  19. [19]
    Mumtaz M, Rahim M, Khan NA, et al. Dielectric properties of oxygen post-annealed Cu0.5Tl0.5Ba2Ca3(Cu4−yCdy)O12−δ bulk superconductor. Ceram Int 2013, 39: 9591–9598.CrossRefGoogle Scholar
  20. [20]
    Abdeen W, Mohammed NH, Awad R, et al. Influence of nano-Ag addition on phase formation and electrical properties of (Cu0.5Tl0.5)-1223 superconducting phase. J Supercond Nov Magn 2013, 26: 623–631.CrossRefGoogle Scholar
  21. [21]
    Jabbar A, Mumtaz M, Nadeem K. Noble metals (Ag, Au) nanoparticles addition effects on superconducting properties of CuTl-1223 phase. Eur Phys J Appl Phys 2015, 69: 30601.CrossRefGoogle Scholar
  22. [22]
    Wagner KW. Zur Theorie der unvollkommenen Dielektrika. Annalen der Physik 1913, 345: 817–855.CrossRefGoogle Scholar
  23. [23]
    Tselev A, Brooks CM, Anlage SM, et al. Evidence for power-law frequency dependence of intrinsic dielectric response in the CaCu3Ti4O12. Phys Rev B 2004, 70: 144101.CrossRefGoogle Scholar

Copyright information

© The Author(s) 2016

Authors and Affiliations

  • M. Mumtaz
    • 1
    Email author
  • Liaqat Ali
    • 1
  • Shoaib Azeem
    • 1
  • Saad Ullah
    • 1
  • G. Hussain
    • 1
  • M. W. Rabbani
    • 1
  • Abdul Jabbar
    • 2
  • K. Nadeem
    • 1
  1. 1.Materials Research Laboratory, Department of Physics, FBASInternational Islamic University (IIU)IslamabadPakistan
  2. 2.Department of PhysicsGhazi UniversityDera Ghazi KhanPakistan

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