BING BING ZHANG
Nursing in Fremont, CA

6753100, Jun 22, 2004

May 30, 2000

09/584764

Bunsen Y. Wong - San Diego CA
Bing Zhang - Fremont CA
Kenneth E. Johnson - Morgan Hill CA

Maxtor Corporation - Longmont CO

G11B 566

428694TM, 428694 TS, 428694 TC, 428336, 428213, 428900, 427131, 2041922

The coercivity of a magnetic recording medium such as a magnetic disk is determined by providing at least two magnetic layers in the recording medium with the relative thicknesses of the two magnetic layers determining coercivity without the need for changing substrate temperature, underlayer thickness or substrate biasing during manufacture. Each magnetic layer is a cobalt alloy of different composition and intrinsic magnetic properties. Importantly, the coercivity can be modified without adversely affecting remanence or squareness of the hysteresis transition region for the recording medium.

5772857, Jun 30, 1998

Feb 28, 1996

8/608142

Bing Zhang - Fremont CA

Seagate Technology, Inc. - Scotts Valley CA

C23C 1434

2041922

Double layer, or bi-layer, magnetic films are deposited over a substrate with an underlayer. The bi-layer film is a film of two different magnetic layers which have different chemical composition, deposited with no spacer layer between the two layers. The lower magnetic layer should be of a low noise magnetic material, while the upper magnetic layer should be a high coercivity magnetic material. The bi-layer film exhibits a single response to magnetic recording and a joint coercivity different from the coercivity of either layer by itself. A preferred double layer media uses a CoCrTa layer deposited under a CoCrTaPt layer, with the CoCrTa layer comprising 30 to 70% of the total film thickness. The double layer film produces magnetic media with higher coercivity and lower media noise as compared to single layered films of either of the materials of the magnetic layers.

6022609, Feb 8, 2000

Oct 2, 1996

8/726296

Chuan Gao - Fremont CA
Roger Klas Malmhall - Mountain View CA
Bing Zhang - Fremont CA
Kevin Grannen - Pacific CA
Be Van Ho - San Jose CA

Seagate Technology, Inc. - Scotts Valley CA

G11B 566

428141

The signal-to-noise ratio of a magnetic recording medium having a thin magnetic layer is improved by adjusting the deposition conditions of the underlayer so that the magnetic layer is pseudo-epitaxially grown with a substantially uniform sub-micron-scale morphology. Uniform sub-micron-scale morphology can be attained by strategic selection of the underlayer and magnetic layer materials, and by controlling the underlayer deposition conditions so that the magnetic layer is epitaxially grown by a growth mechanism which is predominantly layer by layer. In an embodiment of the present invention, an underlayer comprising an alloy of chromium with vanadium, titanium or manganese, or an underlayer comprising a nickel-aluminum alloy, is sputter deposited at a pressure less than about 10 mTorr, substrate temperature greater than about 300. degree. C. and substrate bias greater than about 300 V, and a cobalt magnetic layer is epitaxially grown thereon, predominantly layer by layer.

5952097, Sep 14, 1999

Nov 4, 1997

8/964259

Bing Zhang - Fremont CA

Seagate Technology, Inc. - Scotts Valley CA

G11B 566

428332

Double layer, or bi-layer, magnetic films are deposited over a substrate with an underlayer. The bi-layer film is a film of two different magnetic layers which have different chemical composition, deposited with no spacer layer between the two layers. The lower magnetic layer should be of a low noise magnetic material, while the upper magnetic layer should be a high coercivity magnetic material. The bi-layer film exhibits a single response to magnetic recording and a joint coercivity different from the coercivity of either layer by itself. A preferred double layer media uses a CoCrTa layer deposited under a CoCrTaPt layer, with the CoCrTa layer comprising 30 to 70% of the total film thickness. The double layer film produces magnetic media with higher coercivity and lower media noise as compared to single layered films of either of the materials of the magnetic layers.

2012014, Jun 7, 2012

Dec 5, 2011

13/311367

James L. Zehnder - Menlo Park CA, US
Bing Zhang - Fremont CA, US

C40B 30/04, C40B 30/00, G01N 33/566, C12Q 1/68

506 9, 435 611, 506 7, 435 612, 435 71, 435 792

Aspects of the subject invention are drawn to methods, compositions, systems and kits for the assessment of oxidative stress in an individual from a blood sample. In certain embodiments, the expression level of VNN1 in blood cells from a subject (or patient) is assessed and used to determine the subject's oxidative stress state, where an increased/high expression level of VNN1 indicates that the subject is in a state of oxidative stress. Expression of VNN1, and optionally other genes, may be done by assessing nucleic acid and/or protein levels in the blood cells obtained from the subject.

6077603, Jun 20, 2000

Jul 23, 1997

8/899295

Bing Zhang - Fremont CA

Seagate Technology, Inc. - Scotts Valley CA

G11B 566

428332

A seed layer is deposited under an underlayer in magnetic thin film media. The seed layer material has a similar lattice parameter and a similar crystal structure to the underlayer material. The preferred structure involves a nickel-aluminum seed layer, under a chromium underlayer, under a cobalt-based magnetic layer. Use of the nickel-aluminum seed layer produces higher coercivity and lower media noise in the resultant magnetic thin film. The coercivity and media noise values for the resultant magnetic thin film are dependent upon deposition parameters, and recommended deposition parameters are given.

5858566, Jan 12, 1999

Jul 3, 1996

8/678424

Bing Zhang - Fremont CA

Seagate Technology, Inc. - Scotts Valley CA

G11B 564, G11B 566

428694TS

A seed layer is deposited under an underlayer in magnetic thin film media. The seed layer material has a similar lattice parameter and a similar crystal structure to the underlayer material. The preferred structure involves a nickel-aluminum seed layer, under a chromium underlayer, under a cobalt-based magnetic layer. Use of the nickel-aluminum seed layer produces higher coercivity and lower media noise in the resultant magnetic thin film. The coercivity and media noise values for the resultant magnetic thin film are dependent upon deposition parameters, and recommended deposition parameters are given.