Thermomagnetic writing in GdIG

Doyle, William; Goldberg, G. K.; Flannery, W.

doi:10.1109/tmag.1970.1066906

Cited by 13 publications

(1 citation statement)

References 16 publications

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“…Formation of new nucleation centers is less likely in this latter case because in most parts of the films, the local nucleation coercivity is higher than the wall motion coercivity. The second question, the difference between the two kinds of initial magnetization curves, can be answered by the well-known minimum stable domain diameter, [8][9][10][11] d = cσ w /(M s H c ), where c is a positive proportion factor (whose value depends on the shape of the domain and is on the order of 1), σ w is the wall energy density, M s is the saturation magnetization, H c is coercivity, and d is the diameter of the domain. The domain wall feels a collapsing force, H collap = −cσ w /(M s d), arising from the domain wall energy, where the sigh means that the field is opposite to the domain magnetization.…”

Section: Discussionmentioning

confidence: 99%

Initial Magnetization Curve and Magnetic Domain Pattern of Co/Pt Multilayered Thin Film

Wu¹,

Qiu²,

Lai³

et al. 1999

Jpn. J. Appl. Phys.

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This study inquires into the relationships between the initial magnetization curve and the magnetic domain pattern in the demagnetized states for multilayered Co/Pt thin film samples. The magnetic domain pattern for the sample demagnetized by an in-plane magnetic field and for the sample demagnetized by a perpendicular magnetic field were found to be quite different even though both states have zero magnetization. The former state has denser and finer domains than the latter. The initial magnetization for the fine domains increases with an increase in magnetic field, while for the coarse domains, the initial magnetization remains at zero for magnetic field below coercivity H c , then rises sharply to saturated magnetization when magnetic field is nearly equal to H c . Moreover, the magnetic domain pattern for the sample demagnetized by an in-plane magnetic field can be use to estimate the domain wall energy as long as the domain size is known

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Section: Discussionmentioning

confidence: 99%

Initial Magnetization Curve and Magnetic Domain Pattern of Co/Pt Multilayered Thin Film

Wu¹,

Qiu²,

Lai³

et al. 1999

Jpn. J. Appl. Phys.

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30Bl - 73Bo6

Hansen¹,

Enke²,

Winkler³

Landolt-Börnstein - Group III Condensed Matter

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Improvement in optical and magnetic properties of Bi-substituted garnet sputtered films for magneto-optical recording

Gomi

Satoh

Abe

1988

Journal of Applied Physics

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We have investigated the effect on the optical and magnetic properties of adding W or Co to Bi-substituted garnet films sputtered on glass substrates. Adding a small amount (<1.2 at. %) of W makes the film optically homogeneous. It also increases coercivity more than three times, probably due to wall pinning by W atoms. Adding Co reduces coercivity. On the thin film with added W, we have successfully performed a dynamic thermomagnetic writing with a regular bit shape. This promotes development of magneto-optical memory using garnet sputtered film.

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Thermomagnetic writing in GdIG

Cited by 13 publications

References 16 publications

Initial Magnetization Curve and Magnetic Domain Pattern of Co/Pt Multilayered Thin Film

Initial Magnetization Curve and Magnetic Domain Pattern of Co/Pt Multilayered Thin Film

30Bl - 73Bo6

Improvement in optical and magnetic properties of Bi-substituted garnet sputtered films for magneto-optical recording

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