jap banner
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter UniPHY Group iResearch App Facebook

Journal of Applied Physics / Volume 111 / Issue 7 / PROCEEDINGS OF THE 56TH ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS / Soft Magnetic Materials

J. Appl. Phys. 111, 07A320 (2012); http://dx.doi.org/10.1063/1.3675065 (3 pages)

Unusual magnetization characteristics of Fe-Ni films with graded composition

Leszek M. Malkinski1, Rahmatollah Eskandari1, April L. Fogel2, and Seonggi Min1

1Advanced Materials Research Institute, University of New Orleans, New Orleans, Louisiana 70148, USA
2Department of Engineering and Technology, Western Washington University, 904 Indian St., Bellingham, Washington, 98225, USA

View MapView Map

(Received 30 September 2011; accepted 1 November 2011; published online 16 February 2012)

Thin films of Fe-Ni with graded composition have been deposited on a Si (001) substrate at room temperature by co-sputtering of Fe and Ni with variable rates of the constituting elements. The composition of the films was changing linearly across the thickness from Fe80Ni20 to Fe6Ni94. Five samples were studied with the thickness of 30, 50, 100, 150, and 200 nm. The hysteresis loops measured with the field applied in the film plane had square shape and the coercivity was varying from 11 to 22 Oe. However, the loops for the field perpendicular to the film plane displayed unusual shapes consisting of a double-step hysteresis loop at low fields and unhysteretic part at higher fields. The size of the steps varied with the thickness of the film. The most likely source of the double step hysteretic curves was identified as magnetostrictive stresses at the film/substrate interface. This was evidenced by the disappearance of the second hysteresis step after annealing at 200 °C for 1 h and significant changes of the hysteresis loops when the same structure was deposited starting from Fe-rich or Ni-rich compositions at the substrate.

© 2012 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL PROCEDURES
  3. RESULTS AND DISCUSSION
  4. CONCLUSIONS

KEYWORDS, PACS, and IPC

Keywords

annealing, coercive force, interface magnetism, iron alloys, magnetic hysteresis, magnetic thin films, magnetoresistance, nickel alloys, sputter deposition

PACS

  • 75.70.Ak

    Magnetic properties of monolayers and thin films

  • 81.15.Cd

    Deposition by sputtering

  • 75.60.Ej

    Magnetization curves, hysteresis, Barkhausen and related effects

  • 81.05.Bx

    Metals, semimetals, and alloys

  • 72.15.Gd

    Galvanomagnetic and other magnetotransport effects

  • 75.70.Cn

    Magnetic properties of interfaces (multilayers, superlattices, heterostructures)

International Patent Classification (IPC)

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3675065

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    G. Choe and M. Steinback, J. Appl. Phys. 85(8), 5777 (1999)JAPIAU000085000008005777000001.

    J. C. A. Huang, C. H. Lee, Y. M. Hu, and C. C. Yu, Phys. Rev. B 62(6), 3929 (2000).

    K. Inomata and S. Hashimoto, J. Appl. Phys. 74(6), 4096 (1993)JAPIAU000074000006004096000001.


Figures (4)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. Unusual magnetization characteristics of Fe-Ni films with graded composition
  2. Electrodeposition and magnetic properties of FeCo alloy films
  3. Tailoring magnetocrystalline anisotropy of FePt by external strain
  4. Effect of attrition time on the microwave permeability of magnetic Fe-Si-Al flakes
  5. In-situ investigation of phase formation in nanocrystalline (Co97.5Fe2.5)89Zr7B4 alloy by high temperature x-ray diffraction
Go to AIP Home
Copyright © American Institute of Physics
close