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Ferroelectric and Ferromagnetic Nanofibers: Synthesis, Properties and Applications
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
2012 (English)In: ASIA-PACIFIC INTERDISCIPLINARY RESEARCH CONFERENCE 2011 (AP-IRC 2011), 2012, 012006- p.Conference paper, Published paper (Other academic)
Abstract [en]

As first time, ferroelectric (Ba0.85Ca0.15)(Ti0.9Zr0.1)O-3 (BCTZ), biocompatible (Na0.5K0.5)NbO3 (NKN), and ferromagnetic Y3Fe5O12 (YIG) nanofibers were synthesized by sol-gel assisted electrospining technique. Non-woven, bead-free 100 mu m long fiber mat was formed from close-packed nanocrystals after calcination in air at 800 degrees C (BCTZ and NKN) and 1100 degrees C (YIG). BCTZ fibers are 200 nm in width whereas NKN and YIG fibers have smaller 50-100 nm diameter. X-ray diffraction and Raman spectroscopy show that BCTZ and NKN crystallized in tetragonal and rhombohedral polar phases in the vicinity of morphotropic phase boundary. Room temperature ferromagnetism in YIG fibers is indicated by a well formed M-H hysteresis loop with about 70% of remnant magnetization to the saturated value reached at 150 Oe. Broad band microwave spectroscopy revealed strong asymmetry of the shape of ferromagnetic resonance lines that conforms to a three orders of magnitude shape aspect ratio of YIG nanofibers.

Place, publisher, year, edition, pages
2012. 012006- p.
Series
Journal of Physics Conference Series, ISSN 1742-6588 ; 352
Keyword [en]
Sol-Gel, Electrospinning, Electrical Polarizability, Ferromagnetic Resonance, Biocompatibility
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-98955DOI: 10.1088/1742-6596/352/1/012006ISI: 000305182700006Scopus ID: 2-s2.0-84860666958OAI: oai:DiVA.org:kth-98955DiVA: diva2:541016
Conference
Asia-Pacific Interdisciplinary Research Conference (AP-IRC), NOV 17-18, 2011, Aichi, JAPAN
Note

QC 20120713

Available from: 2012-07-13 Created: 2012-07-05 Last updated: 2017-06-13Bibliographically approved

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