Kirill A Rivkin

US Patent:

8189294, May 29, 2012

Filed:

Jun 21, 2010

Appl. No.:

12/819998

Inventors:

Harry Sam Edelman - Minneapolis MN, US
David Christopher Seets - Shorewood MN, US
Mourad Benakli - Bloomington MN, US
Kirill Aleksandrovich Rivkin - Edina MN, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 5/23

US Classification:

3601253

Abstract:

An apparatus that includes a write element including a write element tip having a leading edge, a trailing edge, and first and second side edges connecting the leading edge to the trailing edge, wherein the trailing edge is non-planar; a trailing shield proximate the trailing edge of the write element; a first side shield proximate the first side edge; and a second edge proximate the second side edge.

US Patent:

8537501, Sep 17, 2013

Filed:

Mar 28, 2011

Appl. No.:

13/072890

Inventors:

Mourad Benakli - Bloomington MN, US
Kirill Aleksandrovich Rivkin - Edina MN, US
James Gary Wessel - Savage MN, US
Dehua Han - Freemont CA, US
Huaqing Yin - Eden Prairie MN, US
Scott Franzen - Savage MN, US
Jianhua Xue - Maple Grove MN, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 5/127

US Classification:

360319, 3601253

Abstract:

A write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing surface, a leading surface that is opposite the trailing surface, and first and second surfaces; a trailing shield proximate the trailing surface of the magnetic write pole; first and second gaps proximate the first and second surfaces of the magnetic write pole; first and second side shields proximate the first and second gaps, each of the first and second side shields having a trailing shield surface; and first and second antiferromagnetic-coupling layers positioned between the trailing shield surfaces of the first and second side shields and the trailing shield.

US Patent:

8564910, Oct 22, 2013

Filed:

Nov 12, 2009

Appl. No.:

12/616842

Inventors:

Mourad Benakli - Bloomington MN, US
Kirill Rivkin - Edina MN, US
Kaizhong Gao - Eden Prairie MN, US
James Wessel - Savage MN, US
Ming Sun - Eden Prairie MN, US
Ibro Tabakovic - Edina MN, US
Mark Thomas Kief - Lakeville MN, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 5/33
G11B 5/127

US Classification:

360319, 360317

Abstract:

An apparatus and associated method for a magnetic shield structure for data transduction from a recordable media in a data storage device. Various embodiments of the present invention are generally directed to a data transducer and a magnetic shield structure comprising a write shield magnetic material constructed of exchange decoupled material.

US Patent:

8582237, Nov 12, 2013

Filed:

Jun 13, 2011

Appl. No.:

13/158719

Inventors:

James Gary Wessel - Savage MN, US
Mourad Benakli - Bloomington MN, US
Raul Horacio Andruet - Woodbury MN, US
Kirill A. Rivkin - Edina MN, US
Sarbeswar Sahoo - Shakopee MN, US

Assignee:

Seagate Technology LLC - Cupertino CA

International Classification:

G11B 5/127

US Classification:

3601253

Abstract:

A selectively magnetic insert that is capable of enhancing magnetic writing, such as in use as a data transducing head. In accordance with various embodiments, a write pole is in contact with a selectively magnetic insert that decouples the write pole from at least one adjacent shield in response a powered operation.

US Patent:

8619509, Dec 31, 2013

Filed:

Aug 8, 2012

Appl. No.:

13/569408

Inventors:

Kirill Aleksandrovich Rivkin - Edina MN, US
Mourad Benakli - Bloomington MN, US
Ned Tabat - Chanhassen MN, US

Assignee:

Seagate Technology LLC - Cupertino CA

International Classification:

G11B 11/00

US Classification:

369 1314, 36012503

Abstract:

In an example, a method comprises aligning a central axis of a paddle portion on a write pole circuit to be substantially perpendicular to an adjacent magnetic surface, and bending a central axis of an extended tip portion relative to the central axis of the paddle portion. In another example, a transducer head comprises a write pole circuit having a paddle portion with a central axis, and an extended tip portion with a central axis, the central axis of the extended tip portion angled from the central axis of the paddle portion. In another example, a magnetic circuit comprises a write pole circuit having a paddle portion and an extended tip portion, the extended tip portion bending away from a central axis of the paddle portion, and a coil wrapping around the extended tip portion.

US Patent:

20090262457, Oct 22, 2009

Filed:

Apr 21, 2009

Appl. No.:

12/427534

Inventors:

Kirill Aleksandrovich Rivkin - Edina MN, US
Ned Tabat - Chanhassen MN, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 5/127

US Classification:

360110, G9B 504

Abstract:

A microwave assisted magnetic recording system includes a write pole that generates a write magnetic field, an element that generates a radio frequency assist magnetic field, and a recording medium that moves relative to the write pole. The recording medium is exposed to the radio frequency assist magnetic field before it is exposed to the write magnetic field. One possible element that generates the radio frequency assist magnetic field is an assist wire placed perpendicular to the write pole. Alternatively, the assist wire can be placed parallel to the write pole so that its radio frequency assist magnetic field couples with the write pole, which in turn generates its own coupled radio frequency magnetic field along with the write magnetic field.

US Patent:

20100034017, Feb 11, 2010

Filed:

Oct 15, 2008

Appl. No.:

12/251603

Inventors:

Kirill Rivkin - Edina MN, US
Yiran Chen - Eden Prairie MN, US
Xiaobin Wang - Chanhassen MN, US
Haiwen Xi - Prior Lake MN, US

Assignee:

SEAGATE TECHNOLOGY LLC - Scotts Valley CA

International Classification:

G11C 11/14

US Classification:

365171

Abstract:

A memory unit having a spin torque memory cell with a ferromagnetic free layer, a ferromagnetic pinned layer and a spacer layer therebetween, with the free layer having a switchable magnetization orientation with a switching threshold. A DC current source is electrically connected to the spin torque memory cell to cause spin transfer torque in the free layer. An AC current source is electrically connected to the spin torque memory cell to produce an oscillatory polarized current capable of spin transfer torque via resonant coupling with the free layer.

US Patent:

20110268991, Nov 3, 2011

Filed:

Apr 30, 2010

Appl. No.:

12/771528

Inventors:

Mourad Benakli - Bloomington MN, US
Kirill Aleksandrovich Rivkin - Edina MN, US
Declan Macken - Prior Lake MN, US
Victor Boris Sapozhnikov - Minnetonka MN, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 5/33

US Classification:

428810

Abstract:

An apparatus that includes a first read shield and a second read shield and a reader stack between the first and second read shields. The first and second read shields each include a thin high permeability layer closest to the reader stack and a low permeability layer and/or a geometric feature to control magnetic field flux lines in a free layer of the reader stack.