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Name: Prof. Dr. Arif Mumtaz
Designation: Associate Professor and Chairperson
Department: Physics


Qualifications:


Phone: +92-51 9064-2127
Email: arif@qau.edu.pk
Status: On Job
Other Weblink:


Research Interests Publications Conferences Research Projects

1.      Particle size dependence of the superconductivity and ferromagnetism in YBCO nanoparticles. S. K. Hasanain • Naureen Akhtar • Arif Mumtaz. J Nanopart Res. DOI 10.1007/s11051-010-9947-9

2.      Temperature dependent coercivity and magnetization of nickel ferrite nanoparticles. K. Maaz, Mumtaz A, S.K. Hasanain and M.F. Bertino JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 322, 2199-2202(2010)

3.      Effect of Crystallographic Texture on Magnetic Characteristics of Cobalt Nanowires. Maaz. K, Karim. S, Usman. M, Mumtaz. A, Liu. J, Duan. JL, and Maqbool M. NANOSCALE RESEARCH LETTERS. 5. 1111-1117(2010)

4.      Magnetic characterization of Co1-xNixFe2O4 (0 <= x <= 1) nanoparticles prepared by co-precipitation route; Maaz. K, Khalid. W, Mumtaz. A, Hasanain. S. K, Liu, J, Duan, J.L.; PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES: 41, 593-599 (2009).

5.      Synthesis and magnetic characterization of nickel ferrite nanoparticles prepared by co-precipitation route; Maaz, K, Karim, S, Mumtaz, A, Hasanain, S. K, Liu, J, Duan, J. L.; JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS , 321, 1838-1842 (2009).

6.      Magnetic response of core-shell cobalt ferrite nanoparticles at low temperature. Maaz, K, Usman, M, Karim, S, Mumtaz, A, Hasanain, S. K., Bertino, M. F. JOURNAL OF APPLIED PHYSICS; 105, Article Number: 113917 ( 2009)  

7.      Effect of vanadium doping on structural, magnetic and optical properties of ZnO nanoparticles. Tahir, N., Hussain, S. T, Usman, M, Hasanain, S. K., Mumtaz, A. APPLIED SURFACE SCIENCE    255, 20, 8506-8510 (2009).  

8.      Smelting in the age of nano: Iron aerogels. Nicholas Leventis, Naveen Chandrasekaran, Chariklia Sotiriou-Leventisa and Arif Mumtaz. J. Mater. Chem., 2009, 19, 63–65.

9.      Electrical transport and optical studies of ferromagnetic Cobalt doped ZnO nanoparticles exhibiting a metal-insulator transition. M. Naeem, S. K. Hasanain, A. Mumtaz. J. Phys.: Condens. Matter 20 (2008) 025210

10.  Nonlinear Susceptibility Studies in La0.85Ca0.15Mn0.95Fe0.05O3, Hydayat Ullah, Arif Mumtaz,Wiqar Hussain Shah, and S.K.Hasanain  J. Physics Condensed Matter 19. 106202, (2007).

11. Synthesis and Magnetic Properties of Cobalt Ferrite (CoFe2O4) Nanoparticles Prepared by Wet Chemical Route K.Maaz, Arif Mumtaz, S.K. Hasanain, Abdullah Ceylan J. Mag. And Mag. Materials. 308 (2): 289-295  2007

12. Exchange Bias and Vertical Shift in CoFe2O4 nanoparticles A. Mumtaz, K. Maaz, B. Janjua and S.K. Hasanain. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 313 (2): 266-272 JUN 2007

13. Effective Magnetic Anisotropy and Coercivity in Fe Nanoparticles. Lubna Rafiq Shah, Bakhtayar Ali, S.K.Hasanain, Arif Mumtaz, C. Baker and S. Ismat Shah. : Int. J. Mod. Phys. B  20, 37-47 (2006)

14. Re-entrant spin freezing behaviour in La0.85Ca0.15MnO3 manganite. S.K.Hasanain, Wiqar Hussain Shah, Arif Mumtaz, M. Nadeem and M.J.Akhtar.  J. Mag. And Mag. Materials. 271, 79-87 (2004).

15. Vortex phase diagram for extremely underdoped Bi2.2Sr1.72La0.08CaCu2O8+d Y. Yamaguchi, K. Oka, A. Mumtaz and H. Bando. Physica C: 383(2003) 445-449

16. Unusual Noise in the Magnetization Relaxation in MgB2 Superconductors. A. Mumtaz, W W. Setyawan and S. A. Shaheen. Phys Rev. B 65 (2001) 20503 (Rapid Communications).

17. Disorder-induced vortex-phase transition and its evolution with oxygen doping in Bi1.7Pb0.3Sr2CaCu2Oy crystals. Y. Yamaguchi, N. Shirakawa, G. Rajaram, K. Oka, A. Mumtaz, H. Obara, T. Nakagawa and H. Bando. Physica C: Superconductivity, 361, , Pages 244-250 (2001).

18. Vortex creep characteristics via magnetic relaxation of Bi2Sr2CaCu2O8+delta crystals. Yamaguchi Y, Rajaram G, Shirakawa N, Mumtaz A, Obara H, Nakagawa T, Bando H. Physica  C 361 203(2001)

19. Dynamic Response in La0.55Ca0.45MnO3: Temperature and Field Dependence. S.K.Hasanain, Anisullah Baig, A.Mumtaz and S.A.Shaheen. J. Magn. Magn. Mater. 225 (2001) 322-330

20. Continuity and Temperature Dependence of Vortex-Phase Boundary of Bi-2212 System Y. Yamaguchi, G. Rajaram, N. Shirakawa , A. Mumtaz, H. Obara, T. Nakagawa and H. Bando. Phys. Rev. B 63, 14504 (2000).

21. Asymmetry of sweep rate and magnetic relaxation effects in YBCO thin films, S.K. Hasanain, S. Shahzada, A. Mumtaz and R. Semerad, Physica C: Superconductivity (331) 3-4 (2000) pp. 307-316

22. Magnetic Relaxation and Vortex-Lattice Phase boundary of Bi-2212. Yuji Yamaguchi, G. R. Ram, N. Shirakawa, Arif Mumtaz H. Obara,  T. Nakagawa, and  H. Bando. Advances in Superconductivity, Springer-Verlag Tokyo 2000 vol.12 no.1 p.326-328.

23. Vortex Distribution Observed by Hall-Probe Array for Overdoped Bi-2212 Crystal. Yuji Yamaguchi, G. R. Ram, N. Shirakawa ,  H. Obara,  T. Nakagawa, Arif Mumtaz  and  H. Bando. Advances in Superconductivity vol.11 no.1 1999 p.223-226

24. Low Field Decoupling Transition in some BSCCO single crystals. Arif Mumtaz and Y.Yamaguchi. Advances in Superconductivity X, Springer-Verlag, pp 99-102 (1998)

25. Effect of Bi-Sr Replacement and Oxygen Doping on Vortex-Mater Phase Transition in Bi2+xSr2-xCaCu2O8+d. Arif Mumtaz, Y. Yamaguchi, K. Oka and G. R. Ram            Physica C 302,331-338(1998)

26. Magnetization Dynamics in crossed ac and dc fields. S. K. Hasanain, S. S. Khan and Arif Mumtaz. Physica C 296 (1998)241-249

27. AC Susceptibility Hysteresis in Granular Superconductors. S. K. Hasanain, S. S.Khan Arif Mumtaz, and G.S.Bhatti, Physica C 269 (1996) 149.

28. Field Sweep Rate Dependence of dc and ac Magnetization in High Tc Superconductors. Arif Mumtaz, S. K. Hasanain, Supercond. Sci. Technol 7, 944-948 (1994).

29. Log to Non Log Variation of Magnetic Relaxation: Studies in Steady     and Varying Fields. S. K. Hasanain Arif Mumtaz, K.Zaheer. Supercond. Sci. Technol 5 92(1992).

30. Flux Pinning in intergrain junctions: A Magnetization Rotation Study. Solid State Commun. Arif Mumtaz, S. K. Hasanain, H. Athar, J.A. Khan. 79, 601(1991).

31. Magnetization Relaxation Effects in Zero Field-Cooled YBaCuO. S. K. Hasanain, Arif Mumtaz, T. Ali, M. Hussain and G.S. Bhatti. Int. J. of Mod. Phys. B4 473(1990).



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