“Journal writing gives us insights into who we are, who we were, and who we can become”
– Sandra Marinella

Study of Nanocrystallization Kinetics in Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 Finemet Type Alloy by Differential Thermal Analysis and Using Different Models


Pritish Kumar Roy, Associate Professor, Department of Physics, Government Brajalal College, Khulna, Bangladesh  and

Dr. Shibendra Shekher Sikder, Professor, Department of Physics, Khulna University of Engineering and Technology, (KUET), Bangladesh

The study of the crystallization processes in the FINEMET type nanocrystalline amorphous alloy is interesting not only from the fundamental aspect of establishing reaction mechanism of crystal nucleation and growth, but also from a technological point of view. The process and nature of crystallization phase constitution of nanocrystalline amorphous alloy of composition Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 prepared by rapid quenching method is investigated in the present study. The amorphous nature of the alloy has been verified by x-ray diffraction (XRD). The differential
thermal analysis (DTA) experiments were performed at different continuous heating rates of 10, 20, 30, 40 and 50 0 C/min. Two different crystalline phases are observed. The crystallization temperatures, the volume fraction of crystallizations and enthalpies of two different crystalline phases of the alloy have been determined from DTA traces. The dependence of on-set crystallization temperature (T x ) on the heating rate of different phases have been used for the determination of different crystallization parameters such as, the activation energy of crystallization, the order parameter or Avrami exponent (n). The results of crystallization were discussed on the basis of different models such as Kissinger’s approach and modification for non-isothermal crystallization of Matusita in addition to Kolmogorov, Johnson, Mehl, Avrami and Ozawa.

Keywords:Amorphous, FINEMET, XRD, DTA, Α-Fe(Si) Phase, Fe 2 B Phase, Activation Energy Of Crystallization, Avrami Exponent

  1. Pol Duwez, R. H. Willens and W. Klement jr, Continuous Series of Metastable Solid Solutions in Silver-Copper Alloys, Journal of Applied Physics, 31, 1960, p. 1136.
  2. A. W. Simpson and D. R. Brambley, The Magnetic and Structural Properties of Bulk Amorphous and Crystalline Co-P Alloys, Physica Status Solidi (b) Vol. 43, Issue 1, 1971, p. 291-300.
  3. Y. Yoshizawa, S. Oguma and K. Yamauchi, New Fe-based soft magnetic alloys composed of ultra-fine grain structure, J. Appl. Phys. 64, 1988, p. 6044-6046.
  4. Y. Yoshizawa & K. Yamauchi, Effects of Magnetic Field Annealing on Magnetic Properties in Ultrafine Crystalline Fe-Cu-Nb-Si-B Alloys, IEEE Trans. Magnetics. 25, 1989, p. 3324.
  5. Hitachi Metals, Ltd., http://www.
  6. G. Herzer, Grain Structure and Magnetism of Nanocrystalline Ferromagnets, IEEE Trans. Magnetics, MAG- 25, 1989, p. 3327- 3328.
  7. H. Le Chatelier, The Constitution of Clay, Z. Physik. Chem. I, 1887, p. 396.
  8. Chau N, Hoa NQ, Luong NH., The crystallization in Finemet with Cu substituted by Ag, Journal of Magnetism and Magnetic Materials, 290–291, 2005, p. 1547–1550.
  9. Shihab MT, Reza MA, Shil SK, Tawhid MM, Sikder SS and Gafur MA, Study of crystallization phases and magnetic properties of nanocrystalline Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 alloy prepared by rapid quenching method, Material Science & Engineering International Journal, Vol. 4, Issue 2, 2020, p. 37- 43.
  10. Leu MS, Chin TS. Crystallization behavior and temperature dependence of the initial permeability of FeCuNbSiB alloy, J Appl. Phys. 81, 1997, p. 4051- 4053.
  11. G. Pozo López, L. M. Fabietti, A. M. Condó and S. E. Urreta, Microstructure and soft magnetic properties of Finemet-type ribbons obtained by twin-roller melt-spinning. Journal of Magnetism and Magnetic Materials, Vol. 322, Issue 20, 2010, p. 3088-3093.
  12. C. Gomez-Polo, J.I. Perez-Landazabal, V. Recarte, IEEE Transactions of Magnetics, Vol. 39, issue: 5, 2003, p. 3019-3024.
  13. Maria Lasocka, The effect of scanning rate on glass transition temperature of splat-cooled Te 85 Ge 15. , Materials Science and Engineering, Vol. 23, Issues: 2-3, 1976, p. 173-177.
  14. A.N. Kolmogorov, Statistical theory of Nucleation processes, Bull. Acad. Sci. U.S.S.R., Phys. Ser. 3, 1937, p. 555.
  15. W. A. Johnson, R. F. Mehl, Reaction kinetics in processes of nucleation and growth, Trans. Am. Inst. Min. Metall. Eng. 135, 1939, p. 416-443.
  16. M. Avrami, Kinetics of phase change. I General theory, Journal of Chemical Physics, Vol. 7, No. 12, 1939, p. 1103-1113.
  17. M. Avrami, Kinetics of phase change II Transformation –time relations for random distribution of nuclei, Journal of Chemical Physics, Vol. 8, 1940, p. 212-224.
  18. M. Avrami, Kinetics of phase change III Granulation, phase change and microstructure, Journal of Chemical Physics, Vol. 9, 1941, p. 177-184.
  19. T. Ozawa, Kinetics of non-isothermal crystallization, Polymer, vol. 12, Issue 3, March 1971, p. 150-158.
  20. T. Ozawa, A New Method of Analyzing Thermogravimetric Data, Bulletin of the chemical Society of Japan, 38, 1965, p. 1881-1886.
  21. Z. H. Khan, S. A. Khan and M. A. Alvi, Study of Glass Transition and Crystallization Behavior in Ga 15 Se 85-x Pb x (0 ≤ x ≤ 6) Chalcogenide Glasses, ACTA PHYSICA POLONICA A, Vol. 123, No. 1, 2013, p. 80-86.
  22. H. E. Kissinger, Reaction Kinetics in Differential Thermal Analysis, Analytical Chemistry, Vol. 29, No. 11, 1957, p. 1702-1706.
  23. K. Matusita, T. Konatsu, R. Yokota, Kinetics of non-isothermal crystallization process and activation energy for crystal growth in amorphous materials, Journal of Material Science, vol. 19, No. 1, 1984, p. 291-296.
  24. Praveen K. Jain, Deepika, K.S. Rathore, Nidhi Jain and N.S. Saxena, Activation Energy of  rystallization and Enthalpy Released of Se 90 In 10-x Sb x (x=0, 2, 4, 6, 8, 10) Chalcogenide glasses. Chalcogenide letters, Vol. 6, No. 3, 2009, p. 97-107.
  25. T. Liu, N. Chen, Z. X. Xu, and R. Z. Ma, The amorphous-to-nanocrystalline transformation in Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 studied by thermogravimetry analysis, Journal of Magnetism and Magnetic Materials, Vol. 152, Issue 3, 1996, p. 359-364.

How to Cite

MLA 9th Edition

Roy, Pritish Kumar, and Shibendra Shekher Sikder. “Study of Nanocrystallization Kinetics in Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 Finemet Type Alloy by Differential Thermal Analysis and Using Different Models.” BL COLLEGE JOURNAL, vol. 4, no. 1, July 2022, pp. 140–55.

APA 7th Edition

Roy, P. K., & Sikder, S. S. (2022). Study of Nanocrystallization Kinetics in Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 Finemet Type Alloy by Differential Thermal Analysis and Using Different Models. BL COLLEGE JOURNAL4(1), 140–155.


Copyright (c) 2023 GOVT. BRAJALAL COLLEGE

Indexed In