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Title: Magnetization Reversal of Three-Dimensional Nickel Anti-Sphere Arrays

Journal Article · · IEEE Magnetics Letters
 [1];  [2];  [2];  [3];  [2];  [4];  [4];  [5];  [6];  [7];  [8];  [9];  [10]; ORCiD logo [2]
  1. Bryn Mawr College, PA (United States). Dept. of Physics; Nanjing Univ. (China). School of Electronic Science and Engineering
  2. Bryn Mawr College, PA (United States). Dept. of Physics
  3. Bryn Mawr College, PA (United States). Dept. of Physics; Zhongyuan Univ. of Technology, Zhengzhou (China). School of Electric and Information Engineering
  4. Univ. of Texas, Arlington, TX (United States). Dept. of Materials Science and Engineering
  5. Villanova Univ., PA (United States). Dept. of Mechanical Engineering; Valparaiso Univ., IN (United States). Dept. of Mechanical Engineering
  6. Villanova Univ., PA (United States). Dept. of Mechanical Engineering
  7. Nanjing Univ. (China). School of Electronic Science and Engineering
  8. Univ. of California, Davis, CA (United States). Physics Dept.; National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
  9. Univ. of California, Davis, CA (United States). Physics Dept.
  10. Colorado State Univ., Fort Collins, CO (United States). Dept. of Physics
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Three-dimensional antisphere arrays (3DAAs) of Ni have been fabricated here using electrochemical deposition into self-assembled polystyrene sphere templates, which offers the advantage of straightforward scalability. Using the first-order reversal curve (FORC) method, the magnetic reversal mechanism is identified from the characteristic features in the FORC distribution. A left-bending boomerang-like feature is observed in the thinnest sample, which transforms to a ridge oriented along the local coercivity Hc axis with increasing sample thickness. This transformation identifies a change in the reversal process from an exchange dominated domain-growth reversal to a localized weakly interacting particle-like reversal. Micromagnetic simulations confirm the decrease in domain growth and increase of pinning behaviors as the thickness of the Ni 3DAAs structure increases, providing strong support to the FORC analysis and interpretation.

Research Organization:
Colorado State Univ., Fort Collins, CO (United States); Bryn Mawr College, PA (United States); Univ. of California, Davis, CA (United States); Univ. of Texas, Arlington, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); China Scholarship Council
Grant/Contract Number:
1207085; DMR-1008791; DMR-1543582; 1207377
OSTI ID:
1418627
Journal Information:
IEEE Magnetics Letters, Vol. 8; ISSN 1949-307X
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Cited By (1)

Launching a new dimension with 3D magnetic nanostructures journal January 2020

Figures / Tables (3)

Fig. 1(p. 4)figure Fig. 1
Fig. 2(p. 4)figure Fig. 2
Fig. 3(p. 4)figure Fig. 3

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Related Subjects

36 MATERIALS SCIENCE
nanomagnetics
three-dimensional antisphere arrays
first-order reversal curve
micromagnetic simulation