Magnetism of FePt Nanoclusters in Polyimide
Joint Authors
Sellmyer, David J.
Chipara, Mircea
George, Tom
Xu, Yingfan
Skomski, Ralph
Yue, Lanping
Ali, Nasar
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-05
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
FePt nanoclusters have been implanted onto polyimide films and subjected to thermal annealing in order to obtain a special magnetic phase (L10) dispersed within the polymer.
SQUID measurements quantified the magnetic features of the as-prepared and annealed hybrid films.
As-implanted FePt nanoparticles in polyimide films exhibited a blocking temperature of 70 ± 5 K.
Thermal annealing in zero and 10 kOe applied magnetic field increased the magnetic anisotropy and coercivity of the samples.
Wide Angle X-Ray Scattering confirmed the presence of FePt and L10 phase.
All samples (as deposited and annealed) exhibited electron spin resonance spectra consisting of two overlapping lines.
The broad line was a ferromagnetic resonance originating from FePt nanoparticles.
Its angular dependence indicated the magnetic anisotropy of FePt nanoparticles.
SEM micrographs suggest a negligible coalescence of FePt nanoparticles, supporting that the enhancement of the magnetic properties is a consequence of the improvement of the L10 structure.
The narrow ESR line was assigned to nonmagnetic (paramagnetic) impurities within the samples consistent with graphite-like structures generated by the local degradation of the polymer during implantation and annealing.
Raman spectroscopy confirmed the formation of graphitic structures in annealed KHN and in KHN-FePt.
American Psychological Association (APA)
Chipara, Mircea& George, Tom& Xu, Yingfan& Skomski, Ralph& Yue, Lanping& Ali, Nasar…[et al.]. 2015. Magnetism of FePt Nanoclusters in Polyimide. Journal of Nanomaterials،Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1069157
Modern Language Association (MLA)
Chipara, Mircea…[et al.]. Magnetism of FePt Nanoclusters in Polyimide. Journal of Nanomaterials No. 2015 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1069157
American Medical Association (AMA)
Chipara, Mircea& George, Tom& Xu, Yingfan& Skomski, Ralph& Yue, Lanping& Ali, Nasar…[et al.]. Magnetism of FePt Nanoclusters in Polyimide. Journal of Nanomaterials. 2015. Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1069157
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1069157