Micro magnetic structure of magnetic clusters in CoCrTaPtB recording media

Takahoshi, H.; Ishio, S.; Saito, Hitoshi; Kobayashi, Kazuo

doi:10.1016/s0304-8853(01)00502-9

Cited by 2 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The magnetic interaction between the particles has been one of the main topics of discussion for a wide variety of technological applications. [3][4][5][6][7] Magnetic granular systems have also been adopted in recording media where one recording bit consists of a number of magnetic particles. Magnetization fluctuation is a problem at the interface of neighboring recording bits as it is one of the main causes for recording noise.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Observation of magnetic structures in Fe granular films by differential phase contrast scanning transmission electron microscopy

Sannomiya

Haga

Nakamura

et al. 2004

Journal of Applied Physics

View full text Add to dashboard Cite

Differential phase contrast ͑DPC͒ scanning transmission electron microscopy was applied to investigate the magnetic structures of Fe granular films. The DPC images showed a cluster-like contrast of 200 nm in the lateral size, which could not be observed by Lorentz transmission electron microscopy in the Fresnel mode. The magnetization vector map reproduced from the DPC images indicated that a magnetization loop generally intersects several isolated particles of 20-40 nm in diameter. The films composed of densely dispersed magnetic particles showed larger magnetization loops, while more separately dispersed films tended to have smaller loops, or magnetization closures in one particle. The loop size is associated with the strength of magnetic interaction between magnetic particles.

show abstract

Section: Introductionmentioning

confidence: 99%

“…[3][4][5][6] However, the contrast of the images produced by this method is rather difficult to interpret. MFM detects only the leakage of magnetic flux from the specimen, and the surface roughness disturbs the magnetic information, which is a common problem in other types of scanning probe microscopy.…”

Section: Introductionmentioning

confidence: 99%