Lixin Jia from 4983 Mccoy Ave, San Jose, CA 95130, age 51

Magnetic Flux Barrier

View page

US Patent:

20120063032, Mar 15, 2012

Filed:

Sep 10, 2010

Appl. No.:

12/879791

Inventors:

Eric Meloche - Burnsville MN, US
Bin Lu - San Ramon CA, US
Lixin Jia - Minneapolis MN, US
Jianhua Xue - Maple Grove MN, US
John David Westwood - San Jose CA, US
Mark Anthony Gubbins - Donegal, IE
Alexandru Cazacu - Derry, GB

International Classification:

G11B 5/127

US Classification:

36012501, G9B 504

Abstract:

Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.

Double Shell Writers

View page

US Patent:

20120147503, Jun 14, 2012

Filed:

Dec 13, 2010

Appl. No.:

12/966453

Inventors:

Jie Zou - Eden Prairie MN, US
David Christopher Seets - Shorewood MN, US
James Wessel - Savage MN, US
Jianhua Xue - Maple Grove MN, US
Lixin Jia - Minneapolis MN, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 5/127
H01F 3/00

US Classification:

36012541, 335297, G9B 504

Abstract:

An apparatus illustratively includes a return pole (RP) and a shield. The RP has a first RP magnetic layer, a second RP magnetic layer, and a RP non-magnetic layer. The RP non-magnetic layer separates and magnetically decouples the RP first and second magnetic layers. The shield has a first shield magnetic layer, a second shield magnetic layer, and a shield non-magnetic layer. The shield non-magnetic layer separates and magnetically decouples the shield first and second magnetic layers. A method illustratively includes generating magnetic flux and collecting the magnetic flux through an inner magnetic shell.

Magnetic Flux Barrier

View page

US Patent:

20150154985, Jun 4, 2015

Filed:

Feb 6, 2015

Appl. No.:

14/615940

Inventors:

- Cupertino CA, US
Bin Lu - San Ramon CA, US
Lixin Jia - Minneapolis MN, US
Jianhua Xue - Maple Grove MN, US
John David Westwood - San Jose CA, US
Mark Anthony Gubbins - Donegal, IE
Alexandru Cazacu - Derry, IE

International Classification:

G11B 5/11

Abstract:

Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is illustratively made from an in-plane magnetically anisotropic material that has an easy plane of magnetization. In another embodiment, a data storage system includes a writing element having an air bearing surface and a shield at the air bearing surface. The shield has a magnetic permeability of approximately zero. The shield illustratively includes alternating layers of positive and negative permeabilities. The shield optionally includes a plurality of shields that may include top, bottom, and side shields.