Effect of in-situ annealing temperature on magnetic domain structure and magnetism of Zr2Co11 thin films

Yunlong Jin, Lanping Yue, David J. Sellmyer

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Rhombohedral Zr2Co11-based materials have shown very promising magnetic properties, but this rhombohedral phase is elusive and metastable. In this study, nanocrystalline Zr2Co11 films were obtained by magnetron co-sputtering on Si (100) substrate with the in-situ annealing. Temperature dependence of magnetic domain structure and magnetic properties of nanocrystalline Zr2Co11 have been investigated. Proper in-situ annealing temperature enhances the content of hard magnetic phase and improves the magnetic properties. Compared with Zr2Co11 thin films grown at low temperature (823 K) and higher temperatures, thin films with in-situ annealing temperature of 1023 K have coercivity Bc (Bc = μ0Hc) of 0.15 T and energy product BHmax of 16.0 kJ/m3. Magnetic Force Microscopy images show the highest bright-dark magnetic domain contrast with highest root-mean-square values of the phase shift for thin film with in-situ annealing temperature of 1023 K. These findings have correlated magnetic domain structure and magnetic properties of Zr2Co11 thin films, and elaborated the effect of different in-situ annealing temperatures on magnetic domain structure.

Original languageEnglish (US)
Pages (from-to)283-288
Number of pages6
JournalThin Solid Films
Volume636
DOIs
StatePublished - Aug 31 2017

Fingerprint

Magnetic domains
Magnetism
magnetic domains
Annealing
Thin films
annealing
magnetic properties
thin films
Magnetic properties
Temperature
temperature
mean square values
magnetic force microscopy
Magnetic force microscopy
coercivity
phase shift
sputtering
Coercive force
Phase shift
Sputtering

Keywords

  • Magnetic domains
  • Magnetism
  • Microstructure
  • Sputtering
  • Surface morphology
  • Thin films

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Effect of in-situ annealing temperature on magnetic domain structure and magnetism of Zr2Co11 thin films. / Jin, Yunlong; Yue, Lanping; Sellmyer, David J.

In: Thin Solid Films, Vol. 636, 31.08.2017, p. 283-288.

Research output: Contribution to journalArticle

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AB - Rhombohedral Zr2Co11-based materials have shown very promising magnetic properties, but this rhombohedral phase is elusive and metastable. In this study, nanocrystalline Zr2Co11 films were obtained by magnetron co-sputtering on Si (100) substrate with the in-situ annealing. Temperature dependence of magnetic domain structure and magnetic properties of nanocrystalline Zr2Co11 have been investigated. Proper in-situ annealing temperature enhances the content of hard magnetic phase and improves the magnetic properties. Compared with Zr2Co11 thin films grown at low temperature (823 K) and higher temperatures, thin films with in-situ annealing temperature of 1023 K have coercivity Bc (Bc = μ0Hc) of 0.15 T and energy product BHmax of 16.0 kJ/m3. Magnetic Force Microscopy images show the highest bright-dark magnetic domain contrast with highest root-mean-square values of the phase shift for thin film with in-situ annealing temperature of 1023 K. These findings have correlated magnetic domain structure and magnetic properties of Zr2Co11 thin films, and elaborated the effect of different in-situ annealing temperatures on magnetic domain structure.

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