| Автор | Hysen, T |
| Автор | Deepa, S |
| Автор | Saravanan, S |
| Автор | Ramanujan, R V |
| Автор | Avasthi, D K |
| Автор | Joy, P A |
| Автор | Kulkarni, S D |
| Автор | Anantharaman, M R |
| Дата выпуска | 2006-05-21 |
| dc.description | Magnetic properties of nano-crystalline soft magnetic alloys have usually been correlated to structural evolution with heat treatment. However, literature reports pertaining to the study of nano-crystalline thin films are less abundant. Thin films of Fe<sub>40</sub>Ni<sub>38</sub>B<sub>18</sub>Mo<sub>4</sub> were deposited on glass substrates under a high vacuum of ≈ 10<sup>−6</sup> Torr by employing resistive heating. They were annealed at various temperatures ranging from 373 to 773 K based on differential scanning calorimetric studies carried out on the ribbons. The magnetic characteristics were investigated using vibrating sample magnetometry. Morphological characterizations were carried out using atomic force microscopy (AFM), and magnetic force microscopy (MFM) imaging is used to study the domain characteristics. The variation of magnetic properties with thermal annealing is also investigated. From AFM and MFM images it can be inferred that the crystallization temperature of the as-prepared films are lower than their bulk counterparts. Also there is a progressive evolution of coercivity up to 573 K, which is an indication of the lowering of nano-crystallization temperature in thin films. The variation of coercivity with the structural evolution of the thin films with annealing is discussed and a plausible explanation is provided using the modified random anisotropy model. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | 2006 IOP Publishing Ltd |
| Название | Effect of thermal annealing on Fe<sub>40</sub>Ni<sub>38</sub>B<sub>18</sub>Mo<sub>4</sub> thin films: modified Herzer model for magnetic evolution |
| Тип | paper |
| DOI | 10.1088/0022-3727/39/10/002 |
| Electronic ISSN | 1361-6463 |
| Print ISSN | 0022-3727 |
| Журнал | Journal of Physics D: Applied Physics |
| Том | 39 |
| Первая страница | 1993 |
| Последняя страница | 2000 |
| Аффилиация | Hysen, T; Department of Physics, Cochin University of Science and Technology, Cochin 682 022, Kerala, India; |
| Аффилиация | Deepa, S; Department of Physics, Cochin University of Science and Technology, Cochin 682 022, Kerala, India |
| Аффилиация | Saravanan, S; Department of Physics, Cochin University of Science and Technology, Cochin 682 022, Kerala, India |
| Аффилиация | Ramanujan, R V; School of Materials Engineering, Nanyang Technological University, Singapore 639 798, Singapore |
| Аффилиация | Avasthi, D K; Nuclear Science Centre, Aruna Asaf Ali Marg, New Delhi 110 067, India |
| Аффилиация | Joy, P A; Physical Chemistry Division, National Chemical Laboratory, Pune 411 008, India |
| Аффилиация | Kulkarni, S D; Physical Chemistry Division, National Chemical Laboratory, Pune 411 008, India |
| Аффилиация | Anantharaman, M R; Department of Physics, Cochin University of Science and Technology, Cochin 682 022, Kerala, India |
| Выпуск | 10 |
