Underlayers for heat assisted magnetic recording (HAMR) media

H Yuan, A Ajan, AS Chernyshov… - US Patent 8,941,950, 2015 - Google Patents
Various embodiments provide for a heat assisted magnetic recording (HAMR) media
comprising: a magnetic recording layer; a barrier layer disposed under the magnetic …

Magnetic disk and method for manufacturing same

C Saito, T Sato, T Kajiwara - US Patent 8,877,359, 2014 - Google Patents
Provided are a magnetic disk comprising a granular magnetic recording layer which causes
less noise even with a recording capacity thereof of 250 G or more bits per square inch; and …

Magnetic disk and manufacturing method thereof

K Shimokawa, K Hamakubo, I Kae - US Patent 9,177,586, 2015 - Google Patents
A magnetic disk having at least a magnetic layer, a carbon protective layer, and a lubrication
layer sequentially provided on a substrate. The lubrication layer is a film formed by a …

Recording media with multiple exchange coupled magnetic layers

M Desai, K Kang, J Zhou, BR Acharya - US Patent 9,028,985, 2015 - Google Patents
A magnetic recording (PMR) disk structure is described. The PMR disk structure may include
a magnetic cap** layer being substantially free of an oxide, an upper magnetic layer with …

Lubricant compound for magnetic disk and magnetic disk

K Suzuki, K Shimokawa, K Hamakubo, I Kae - US Patent 9,558,778, 2017 - Google Patents
A lubricant compound is contained in a lubrication layer of a magnetic disk in which at least
a magnetic layer, a protective layer, and a lubrication layer are sequentially provided on a …

Perpendicular magnetic recording disk

K Sakamoto - US Patent 8,951,651, 2015 - Google Patents
6,204,995 6,206,765 6,210,819 6,216,709 6,221,119 6,248,395 6,261,681 6,270.885
6,274,063 6,283,838 6,287.429 6,290,573 6,299,947 6,303.217 6,309,765 6,358,636 …

Perpendicular magnetic recording medium and process for manufacture thereof

T Onoue - US Patent 9,047,903, 2015 - Google Patents
An object of the present invention is to provide a perpendicu lar magnetic recording medium
in which each space between crystal grains of a first magnetic recording layer is so …

Magnetic recording medium including tailored exchange coupling layer and manufacturing method of the same

J Yasumori, Y Sonobe - US Patent 9,093,100, 2015 - Google Patents
(57) ABSTRACT A magnetic recording medium enabling excellent magnetic recording
reproduction characteristics to be exhibited with the spacing loss reduced. The magnetic …

Evaluation method of magnetic disk, manufacturing method of magnetic disk, and magnetic disk

T Ozawa - US Patent 8,908,315, 2014 - Google Patents
An evaluation method that can easily evaluate properties of a carbon protective film and a
lubricant on a magnetic-disk surface or particularly, an evaluation method of a magnetic disk …

Perpendicular magnetic recording disc

T Sato, T Kajiwara - US Patent 8,828,566, 2014 - Google Patents
US8828566B2 - Perpendicular magnetic recording disc - Google Patents US8828566B2 -
Perpendicular magnetic recording disc - Google Patents Perpendicular magnetic recording disc …