Structural and magnetic properties of the nanocrystalline alloy Fe86Zr7Cu1B6

dc.creatordos Santos, DR
dc.creatorTorriani, IL
dc.creatorSilva, FCS
dc.creatorKnobel, M
dc.date1999
dc.dateDEC 15
dc.date2014-12-02T16:30:16Z
dc.date2015-11-26T17:39:31Z
dc.date2014-12-02T16:30:16Z
dc.date2015-11-26T17:39:31Z
dc.date.accessioned2018-03-29T00:21:05Z
dc.date.available2018-03-29T00:21:05Z
dc.identifierJournal Of Applied Physics. Amer Inst Physics, v. 86, n. 12, n. 6993, n. 7000, 1999.
dc.identifier0021-8979
dc.identifierWOS:000083915600059
dc.identifier10.1063/1.371784
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/79662
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/79662
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/79662
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1286469
dc.descriptionA detailed study on the nanocrystallization and its correlation with the attractive soft magnetic properties of the alloy Fe86Zr7Cu1B6 (at %) is presented. Melt-spun amorphous ribbons were submitted to Joule heating for a short time interval (t(a) = 50 s) with different direct current values. The electrical resistance measured during heating showed strong variations associated with the nucleation and growth of alpha-Fe nanocrystals. From x-ray diffraction line profile analysis we obtained the average grain size, crystalline volume fraction, grain size distribution function, and lattice distortions for different annealing currents. The results display an excellent agreement with the magnetic characterization (ac initial permeability and dc hysteresis loops), showing that the optimum soft magnetic behavior is associated with the formation of about 50% in volume of the alpha-Fe nanophase. The extended x-ray absorption fine structure (EXAFS) technique was applied to study the evolution of the short-range ordering around Fe atoms. EXAFS spectra also showed the evolution from a disordered Fe environment to the bcc crystalline arrangement. The onset of crystallization determined from both techniques is slightly different, indicating that the nanocrystallization begins at the surface of the studied samples. (C) 1999 American Institute of Physics. [S0021-8979(99)04224-3].
dc.description86
dc.description12
dc.description6993
dc.description7000
dc.languageen
dc.publisherAmer Inst Physics
dc.publisherWoodbury
dc.publisherEUA
dc.relationJournal Of Applied Physics
dc.relationJ. Appl. Phys.
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectAbsorption Fine-structure
dc.subjectFe-zr-b
dc.subjectStructure Spectroscopy
dc.subjectAbinitio Calculations
dc.subjectAmorphous-alloys
dc.subjectPhase Functions
dc.subjectGrain-size
dc.subjectRibbons
dc.subjectCoercivity
dc.subjectCrystallization
dc.titleStructural and magnetic properties of the nanocrystalline alloy Fe86Zr7Cu1B6
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución