Next Article in Journal
Use of a Modified Vector Model for Odor Intensity Prediction of Odorant Mixtures
Previous Article in Journal
A Trajectory and Orientation Reconstruction Method for Moving Objects Based on a Moving Monocular Camera
Previous Article in Special Issue
Plasmonic Gold Nanostars for Multi-Modality Sensing and Diagnostics
Article Menu

Export Article

Open AccessArticle
Sensors 2015, 15(3), 5687-5696; doi:10.3390/s150305687

Magnetization Reversal and Magnetic Anisotropy in Ordered CoNiP Nanowire Arrays: Effects of Wire Diameter

1
Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering Technology, Vietnam National University, 144 Xuan Thuy, Cau Giay, Hanoi, Vietnam
2
Faculty of Basic Science, Hanoi Industrial College for Textile, Garment and Fashion Le Chi, Gia Lam, Hanoi, Vietnam
3
Faculty of Physics, VNU University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam
4
Department of Physics, University of South Florida, Tampa, FL 33620, USA
*
Authors to whom correspondence should be addressed.
Academic Editor: Vittorio M.N. Passaro
Received: 16 December 2014 / Revised: 15 January 2015 / Accepted: 3 March 2015 / Published: 9 March 2015
View Full-Text   |   Download PDF [2169 KB, uploaded 9 March 2015]   |  

Abstract

Ordered CoNiP nanowires with the same length of 4 µm and varying diameters (d = 100 nm–600 nm) were fabricated by electrodeposition of CoNiP onto polycarbonate templates. X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy confirmed the quality of the fabricated nanowires. Magnetic measurements and theoretical analysis revealed that the magnetization reversal and magnetic anisotropy were significantly influenced by varying of the diameters of the nanowires. There existed a critical wire diameter (dc ≈ 276 nm), below which the magnetization reversal occurred via a coherent rotation mode, and above which the magnetization reversal occurred via a curling rotation mode. The easy axis of the magnetization tended to change in direction from parallel to perpendicular with respect to the wire axis as the wire diameter exceeded dc ≈ 276 nm. With increasing wire diameter, the coercive field (Hc) and the remanent to saturation magnetization ratio (Mr/Ms) were also found to rapidly decrease in the range d = 100–400 nm and gradually decrease for d > 400 nm. View Full-Text
Keywords: CoNiP nanowires; magnetic properties; electrodeposition; magnetic sensors CoNiP nanowires; magnetic properties; electrodeposition; magnetic sensors
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Van Thiem, L.; Tu, L.T.; Phan, M.-H. Magnetization Reversal and Magnetic Anisotropy in Ordered CoNiP Nanowire Arrays: Effects of Wire Diameter. Sensors 2015, 15, 5687-5696.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top