Dr. Ashfaq Ahmad

 

 In HEC recognized journals:

  1. A. SHAMIM, A. MATEEN, SALAH-UD-DIN, M. SULEMAN, A. ASHFAQ and M. S.ZAFAR, Phase change study of amorphous Fe76B24 alloy using resistivity measurements, Journal of Materials Science Letters 7 (1988) 591 (U.K.)
  2. A. SHAMIM, K. M. KHAN, A. AHMAD, M. SULEMAN  and M. NASEEM, Optical band gap determination in lead silicate glasses, International Journal of Electronics  2  (1988) 84618 (U.K.)
  3.  A. SHAMIM, A. AHMAD, T. ABBAS, A. MATEEN, M. NAWAZ and M. S.  Zafar, A study of crystallization behaviour of metglass Fe80B20 based on resistivity measurements,  Modern Physics Letter B, 9 (1988) 1045 (U.K.)
  4.  A. SHAMIM, M. SULEMAN, A. MATEEN, A. AHMAD and M. S. ZAFAR, Crystallization and other phase change study of (Fe0.8Ni0.2)76B24 glass alloy using resistivity measurements, Journal of Materials Science Letters 7 (1988) 1313 (U.K.)
  5. AHMAD SHAMIM, ASHFAQ AHMAD, YUNUS KHAN, MOHAMMAD S. ZAFAR and MUHAMMAD  NAWAZ, A study of crystallization behaviour of glassy Co79.5B20.5 alloy using dynamic temperature-ray diffraction and resistivity measurement, Fizika 21(1988) 133 (Yugoslavia)
  6.  A. ASHFAQ, A. SHAMIM and S.A. SIDDIQI, Dynamic temperature resistometry analysis of rapidly quenched Fe86 B14 alloy and its correlated study by Mössbauer and SEM, Materials Science and Engineering A179 (1994) 546 (Japan)
  7. M. ARSHED, A. ASHFAQ, A. SHAMIM, M. SIDDIQUE and N. M. BUTT, Study of  crystallization process of metglass Fe86B14 by Mössbauer effect and resistivity measurements, Solid State Communications 33 (1994) 101 (U.K.)
  8. B. BAJWA, S. MAHMOOD, A. ASHFAQ and G. NASIM, Effect of electromagnetism on modulation vesicular arbuscular mycorrhiza and growth of gains. I response to electromagnetised rhizobium, Pakistan Journal of Phytopathology 1 (1995) 76 (Pakistan)
  9.  B. BAJWA, S. MAHMOOD, A. ASHFAQ and G. NASIM, Effect of electromagnetism on nodulation  vesicular arbuscular mycorrhiza and growth of gains. II response to electromagnetised seeds, Pakistan Journal of Phytopathology 1 (1995) 78 (Pakistan)
  10.  M.Arshed, M.Siddique, M. Anwar-ul-Islam, A. ASHFAQ, A. Shamim and N. M. Butt, Isochronal crystallization of metglass Fe83B17 using Mossbauer effect and resistivity measurements, Solid State Communications, Vol. 98, No. 5, pp. 427-430, 1996 (U.K.)
  11.  M. ARSHED, A. ASHFAQ, A. SHAMIM, M. SIDDIQUE and N. M. BUTT, Phase transition in melt-spun Fe88B12 and Fe72B28 alloys by resistivity measurements and Mössbauer spectroscopy, Solid State Communications 5 (1996) 431(U.K.)
  12.  A. ASHFAQ, S. A. SIDDIQI and A. SHAMIM, DTRM and  SEM studies of melt-spun Fe72.2Ni3.8B24 amorphous alloy, Turkish Journal of Physics 20 (1996) 760 (Turkey)
  13.   A. SHAMIM, M. SULEMAN, A. MATEEN, A. AHMAD, M. NAWAZ  and M. S. ZAFAR, Crystallization behaviour- study of amorphous (Fe0.95Ni0.05)76B24 alloy using resistivity measurements, Journal of Natural Sciences and Mathematics 1 (1996) 27 (Pakistan)
  14.  A. ASHFAQ, M. MATSUURA and M. SAKURAI, Site occupancy of Zr in Nd(FeZr)B magnet during hydrogenation disproportionation desorption recombination process. Applied Physics Letters 17 (1998) 2512 (USA)
  15.   M. MATSUURA, A. ASHFAQ, M. SAKURAI, T. Tomida, N. Sano and S. Hirosawa, Ga site occupancy in the HDDR treated Nd2Fe14B-based alloy by XAFS. J. Alloys and Comp. 293-295 (1999) 872-876  (Netherland)
  16.  A. ASHFAQ, M. MATSUURA and M. SAKURAI, Redistribution of Zr and Ga in Nd2Fe14B-based magnets during HDDR process: a XAFS study. Journal of Applied Physics 85 (1999) 5681 (U.S.A)
  17.  A. ASHFAQ, M. MATSUURA and M. SAKURAI, Zr site determination and origin of magnetic anisotropy in HDDR processed Nd2Fe14B-based magnets. Journal of Sychrotron Radiation  6 (1999) 705  (U.K.)
  18.  A. ASHFAQ, M. MATSUURA and M. SAKURAI, XAFS study of Zr for Nd16Fe75.5Zr0.5B8 in disproportionated, partially/full recombined states of HDDR process, Journal of Magnetism and Magnetic Materials 212 (2000) 368-372, (France).
  19. A. ASHFAQ and A. Maqsood, Thermal stability study of Fe85.5B14.5 metallic glass, Turkish Journal of Physics 24 (2000) 661 (Turkey).
  20.  M. MATSUURA, A. ASHFAQ  K.Konno and M. SAKURAI, Preferential site occupancy of Zr in NdFeB based magnets; Effect of concentration and HDDR process, Proceedings of the Sixteenth International workshop on Rare-earth magnets and their applications, Japan Institute of Metals, Sendai 9-13, 2000, pp-855 (Japan)
  21.  M. MATSUURA, A. ASHFAQ and M. SAKURAI, Redistribution of Zr in Nanocrystalline Fe90Zr7B2Cu1 and crystalline Fe97Zr3: Local structures of Zr by XAFS, Scripta Materialia 44(2001) 2353-2356
  22.  A. ASHFAQ AND J. STAHN, Enhancement of critical angle in  [Fe/Si]x  multilayers system, to be submitted  (Physica B, 2008)
  23.  A. ASHFAQ AND J. STAHN, Some improvement in Fe/Si multilayered neutron polarizer by modified sputtering geometry, to be submitted (Applied surface science, 2008)

Proceeding/Report

  1. A. SHAMIM,  A. ASHFAQ, M. S. KHAN, M. SULEMAN and  I. ARIF,                DTRM a    novel technique for determination of crystallization  and phase              change temperatures of amorphous metallic alloys, Proceeding of  the                            International Symposium on Advanced Materials, Islamabad 1991, pp. 521                               (Pakistan)
  2.  AHMAD ASHFAQ, Tertiary level Physics education in Pakistan, Proceeding              of the Asian Physics Education Network (ASPEN) General Conference and               Symposium on Introductory Physics Education in University, Tokai                              University, Kanagawa, September 1992, pp. 194 (Japan)
  3.  A. ASHFAQ, and A. SHAMIM, Effect of heating rates on crystallization behaviour of amorphous Fe83B17 alloy, Proceeding of the third International Symposium on Advanced Materials, Islamabad 1993, pp. 99 (Pakistan)
  4. A. ASHFAQ, A race for superconductors, Muattar, Maiden Issue 1 (1993) 93 (Pakistan)
  5.  M.Arshed, M.Siddique, M. Anwar-ul-Islam, A. ASHFAQ, and A. Shamim, Comparative study of crystallized melt-spun iron-boron alloys by Mossbauer effect and resistivity measurements, Proceeding of the third International Symposium on Advanced Materials, Islamabad 1993, pp.99 (Pakistan)
  6.  A. ASHFAQ, A. SHAMIM and M. SULEMAN, Thermal stability study of melt-quenched (Fe1-xNix)76B24, Proceeding of the  fourth International Symposium on Advanced Materials, Islamabad 1995, pp.414 (Pakistan)
  7.  A. ASHFAQ, A. Maqsood and S.K.Hasnain, Crystallization and magnetic behavior of amorphous Fe90Zr10 alloy, Proceeding of the 5th International Symposium on Advanced Materials, Islamabad 1997, pp. 298 (Pakistan)
  8.  A. ASHFAQ, M. MATSUURA and M. SAKURAI, Local structure changes of Zr in the HDDR process for Nd16Fe75.5Zr0.5B8. Proceeding of the Annual Conference of Japan Institute of Metals, Ehime University, Matsuyama, September 28-30, 1998, p.494 (Japan)
  9.  A. ASHFAQ, M. MATSUURA and M. SAKURAI, Role of Zr in HDDR Treated NdFeB-based magnet by fluorescence XAFS. KEK photon factory annual report, 1998, 96-G185, 156. (Japan)
  10.  A. ASHFAQ, M. MATSUURA and M. SAKURAI, The effect of Zr addition on the magnetic anisotropy for as-cast and HDDR treated Nd16Fe75.5Zr0.5B8,  JIM annual spring meeting 1999. (Japan)
  11.  A. ASHFAQ, M. MATSUURA and M. SAKURAI, Zr site occupancy and effect on magnetic anisotropy in HDDR treated NdFeB-based magnets, Proceeding of the 2nd national XAFS conference, July 21-23, 1999, Osaka University, 2P12. p.89 (Japan)
  12.  A. ASHFAQ, M. MATSUURA and M. SAKURAI, XAFS analysis of partly/full recombined states of HDDR treated Nd2Fe14B type magnets. KEK photon factory annual report, 1999, 99-G052, (Japan).
  13.  A. ASHFAQ, M. MATSUURA and M. SAKURAI, EXAFS study of the Zr site preference in near-stoichiometric Nd2Fe14B-based magnets. KEK photon factory annual report, 2000, 99-G052 (Japan).
  14. A. ASHFAQ, What are nanomaterials, COMSATS Physics Today, Vol. 1, 2008 (Pakistan)
  15. A. ASHFAQ, Detection of phase transition in glassy metals using resistivity measurement in the temperature range  -70 °C to 900 °C, M.Sc thesis, 1987, Punjab University, Lahore, Pakistan
  16. A. ASHFAQ, Preparation and phase change study of ferrous glassy metallic alloys, Ph.D. thesis, 1994, Punjab University, Lahore, Pakistan.
                                                   

International Conferences / Symposiums / Workshops Attended / Invited

 

  • Pakistan………..1-day symposium on “Biomedical Material Sciences in Pakistan: Prospects & Potentials”, July 29, 2008, Lahore, Pakistan
  • Saudi Arabia...Student Assessment Seminar, Yanbu Industrial College, December ………………13-15 , 2007.
    Japan............Spring Annual Conference of Japan Institute of Metals, Tokyo Institute of ………………Technology, Tokyo,  March 2-31, 1999.
  • Japan............ 2nd XAFS Annual Conference, Osaka University, Osaka,  July 21-23, ……………….1999.
  • U.S.A.............XAFS X, Chicago, August 10-14, 1998.
  • Japan............Annual Conference of Japan Institute of Metals, Ehime University,  ……………..Matsuyama,   September 28-30, 1998.
  • Japan.............Second International Conference on Synchrotron Radiation in Materials  Science, Kobe, Oct. 31- Nov. 3, 1998.
    U.S.A............ 43rd Annual Conference on Magnetism & Magnetic Materials, Miami, Florida, November 9-12, 1998.
  •  Japan.............117th Meeting of Japan Institute of Metals, Honolulu. December 1995.
  • Japan.............8th International Conference on Rapidly Quenched and Metastable Materials, Sendai, August 1993.
  • Japan.............ASPEN General Conference and Symposium on Introductory Physics Education in University, Kanagawa. September 1992.
  • China.............7th Chinese International Summer School of Physics/Beijing International Workshop on Modern Crystallography,  Beijing. August 1993.
  • China.............The Eighth Beijing International Workshop on Modern Magnetism, Beijing. July 1995.
  • Italy...........….Highlights of Particle and Condensed Matter Physics, ICTP, Trieste. ………………March1993
  • U.K..................International Microscopy and Image Analysis Conference, London. July 1995.
  • Slovakia..........9th International Conference on Rapidly Quenched and Metastable Materials (RQ9), Bratislava. July 1996 
  • U.S.A.............IUCr XVII Congress and General Assembly, Washington. August1996.
  • Pakistan……2nd, 3rd, 4th and 5th International Symposium on Advanced Materials, Islamabad. September 1991, 1993, 1995 and 1997.
  • Pakistan…….First International Conference on Phase Transformations, Islamabad. September 1996.

 
INTERNATIONAL RESEARCH PROJECTS COMPLETTED:

Project
Country
The role of additives in the NdFeB based magnetic materials     
and their effect on the mechanism leading to orientational               
anisotropy in the HDDR process.
JAPAN
Behaviour of  mechanically alloyed Mg-Ni materials with
small amount of  Y and Ce.
JAPAN
Preparation and superconducting properties of MgB2
  SWITZERLAND
In-plane stress and magnetic remanence in multilayers 
SWITZERLAND

 

GENERAL LECTURE DELIVERED:

        • PHYSICS OF  MODERN MATERIALS, Yanbu Industrial College, Saudi Arabia, May              2007
        • LOCAL STRUCTURE CHANGES OF Zr IN THE HDDR PROCESS FOR        Nd16Fe75.5Zr0.5B8, Institute of Space Technology, Islamabad, Pakistan, 20 August       2007
        • MAGNETIC ANISOTROPY IN Fe MONOLAYERS AND Fe/Si MULTILAYERS       (THIN FILMS) INDUCED BY MODIFIED SPUTTERING GEOMETRY            (APERTURE), Institute of Space Technology, Islamabad, Pakistan, 22 August         2007
        • PHYSICS OF HI-TECH MATERIALS: BIRTH TO NANO, Institute of Space   Technology, Islamabad, Pakistan, 25 August 2007
        • TRENDS IN MATERIALS SCIENCE: MODERN MATERIALS, COMSATS   Institute of Information Technology, Lahore, Pakistan, 26 July 2008.

FELLOW:

  • Japan…….Japan Society for the Promotion of Science, Tokyo, No. P97352

 

MEMBERSHIPS:

  • Japan............Member, The Japan Institute of Metals, Sendai. No. 9300761
  • U.K................Member, International Union of Crystallography, Chester. No. IUCr11686
  • U.S.A.............Member, New York Academy of Sciences, New York. No. 44031
  • Pakistan........Member, The Pakistan Institute of Physics, Lahore. No. 0054
  • Pakistan........Member, The Pakistan Physical Society for Semiconductor Theory,Islamabad. No. 0127
  • U.K…………The International XAFS Society.