02223nas a2200229   4500008004100000022001400041245010700055210006900162260008100231300001400312490000700326520137100333100001401704700001401718700001801732700002201750700002001772700002501792700002001817700003301837856012301870       2006                        eng d  a0022-372700aEffect of thermal annealing on Fe40Ni38B18Mo4 thin films: modified Herzer model for magnetic evolution0 aEffect of thermal annealing on Fe40Ni38B18Mo4 thin films modifie  aTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLANDbIOP PUBLISHING LTDcMAY  a1993-20000 v393 a<p>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 Fe40Ni38B18Mo4 were deposited on glass substrates under a high vacuum of approximate to 10(-6) Torr by employing resistive heating. They were annealed at various temperatures ranging from 373 to 773K 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.</p>1 aHysen, T.1 aDeepa, S.1 aSaravanan, S.1 aRamanujan, R., V.1 aAvasthi, D., K.1 aJoy, Pattayil, Alias1 aKulkarni, S., D1 aAnantharaman, Maliemadom, R.  uhttps://library.ncl.res.in/content/effect-thermal-annealing-fe40ni38b18mo4-thin-films-modified-herzer-model-magnetic-001829nas a2200229   4500008004100000022001400041245014300055210006900198260000900267300001000276490000800286520101900294653001501313653002001328653001701348100002001365700001601385700002201401700002201423700002501445856012901470       2017                        eng d  a0168-583X00aDefect induced modification of structural, topographical and magnetic properties of zinc ferrite thin films by swift heavy ion irradiation0 aDefect induced modification of structural topographical and magn  cAPR   a68-740 v3963 a<p>Swift heavy ion irradiation provides unique ways to modify physical and chemical properties of materials. In ferrites, the magnetic properties can change significantly as a result of swift heavy ion irradiation. Zinc ferrite is an antiferromagnet with a Neel temperature of 10 K and exhibits anomalous magnetic properties in the nano regime. Ion irradiation can cause amorphisation of zinc ferrite thin films; thus the role of crystallinity on magnetic properties can be examined. The influence of surface topography in these thin films can also be studied. Zinc ferrite thin films, of thickness 320 nm, prepared by RF sputtering were irradiated with 100 MeV Ag ions. Structural characterization showed amorphisation and subsequent reduction in particle size. The change in magnetic properties due to irradiation was correlated with structural and topographical effects of ion irradiation. A rough estimation of ion track radius is done from the magnetic studies. (C) 2017 Elsevier B.V. All rights reserved.</p>10aSpin glass10aSwift heavy ion10aZinc Ferrite1 aRaghavan, Lisha1 aJoy, P., A.1 aVijaykumar, Varma1 aRamanujan, R., V.1 aAnantharaman, M., R.  uhttps://library.ncl.res.in/content/defect-induced-modification-structural-topographical-and-magnetic-properties-zinc-ferrite