Patents by Inventor Aron Pentek

Aron Pentek has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10943611
    Abstract: In one embodiment, a write head includes a spin polarization layer (SPL) over a seed layer. A spacer layer is over the SPL. A trailing shield is over the spacer layer. The spacer layer forms a first interface between the spacer layer and the trailing shield and forms a second interface between the spacer layer and the SPL. The first interface has an area larger than an area of the second interface. In another embodiment, a write head includes a SPL over a spacer layer. A capping layer is over the SPL. A trailing shield is over the capping layer. The spacer layer forms a first interface between the spacer layer and the main pole and forms a second interface between the spacer layer and the SPL. The first interface has an area larger than an area of the second interface.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: March 9, 2021
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: James Mac Freitag, Zheng Gao, Susumu Okamura, Yongchul Ahn, Aron Pentek, Amanda Baer
  • Patent number: 10438617
    Abstract: A magnetic write head for heat assisted magnetic recording having a novel heat sink structure. The write head includes a magnetic write pole and a thermal transducer located adjacent to a leading edge of the magnetic write pole. A heat sink structure, constructed of a non-magnetic, thermally conductive material such as Au, Ag or Cu partially surrounds the magnetic write pole. The heat sink structure can be formed to contact first and second sides of the magnetic write pole, and can be recessed from the media facing surface of the write head. The space between the heat sink structure and the media facing surface can be filled with a physically hard, non-corrosive metal.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: October 8, 2019
    Assignee: Western Digital Technologies, Inc.
    Inventors: Venkata R K Gorantla, Takuya Matsumoto, Aron Pentek
  • Patent number: 10360932
    Abstract: A method for manufacturing a magnetic write head having a heat sink structure, wherein the magnetic write head is free of voids at the media facing surface. After forming the write pole, a chemical mechanical polishing process is performed prior to defining the heat sink structure. Planarizing the write pole structure by chemical mechanical polishing prior to forming the heat sink structure advantageously reduces the topography over which the heat sink structure. This mitigates shadowing effects from the write pole structure and prevents the formation of voids at the media facing surface.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: July 23, 2019
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Aron Pentek, Takuya Matsumoto, Venkata R K Gorantla
  • Publication number: 20180158473
    Abstract: A magnetic write head for heat assisted magnetic recording having a novel heat sink structure. The write head includes a magnetic write pole and a thermal transducer located adjacent to a leading edge of the magnetic write pole. A heat sink structure, constructed of a non-magnetic, thermally conductive material such as Au, Ag or Cu partially surrounds the magnetic write pole. The heat sink structure can be formed to contact first and second sides of the magnetic write pole, and can be recessed from the media facing surface of the write head. The space between the heat sink structure and the media facing surface can be filled with a physically hard, non-corrosive metal.
    Type: Application
    Filed: April 26, 2017
    Publication date: June 7, 2018
    Inventors: Venkata R K Gorantla, Takuya Matsumoto, Aron Pentek
  • Publication number: 20180158474
    Abstract: A method for manufacturing a magnetic write head having a heat sink structure, wherein the magnetic write head is free of voids at the media facing surface. After forming the write pole, a chemical mechanical polishing process is performed prior to defining the heat sink structure. Planarizing the write pole structure by chemical mechanical polishing prior to forming the heat sink structure advantageously reduces the topography over which the heat sink structure. This mitigates shadowing effects from the write pole structure and prevents the formation of voids at the media facing surface.
    Type: Application
    Filed: December 5, 2016
    Publication date: June 7, 2018
    Inventors: Aron Pentek, Takuya Matsumoto, Venkata R. K. Gorantla
  • Patent number: 8947828
    Abstract: In one embodiment, an apparatus includes a main pole, at least one side shield positioned on sides of the main pole, and a trailing shield having a multi-bump structure positioned near a trailing side of the main pole, wherein the multi-bump structure has six junctures along the trailing shield facing the main pole, a first juncture positioned at a media-facing surface, a sixth juncture positioned away from the media-facing surface, and second, third, fourth, and fifth junctures positioned along the side of the trailing shield facing the main pole between the first and sixth juncture, wherein an element height of a first face of the trailing shield positioned between the fourth and fifth juncture is less than an element height of a second face of the trailing shield positioned at an end of the trailing shield positioned opposite the media-facing surface of the trailing shield.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: February 3, 2015
    Assignee: HGST Netherlands B.V.
    Inventors: Wen-Chien D. Hsiao, Na Young Kim, Terence T. L. Lam, Yansheng Luo, Aron Pentek, Honglin Zhu
  • Patent number: 8947827
    Abstract: In one general embodiment, a magnetic head includes a stitch pole; and a main pole formed adjacent the stitch pole, wherein an end region of the stitch pole closest to an air bearing surface of the head tapers towards the main pole. In another general embodiment, a magnetic head includes a stitch pole being a laminate of at least two magnetic layers separated by a nonmagnetic layer; and a main pole formed adjacent the stitch pole. An end region of the stitch pole closest to an air bearing surface of the head tapers towards the main pole. An average angle of the taper of the end region of the stitch pole is between about 20 and about 45 degrees. Such head may be implemented in a data storage system.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: February 3, 2015
    Assignee: HGST Netherlands B.V.
    Inventors: Venkata R. K. Gorantla, Wen-Chien D. Hsiao, Yimin Hsu, Terence T. L. Lam, Yansheng Luo, Aron Pentek, Katalin Pentek
  • Publication number: 20150029611
    Abstract: In one general embodiment, a magnetic head includes a stitch pole; and a main pole formed adjacent the stitch pole, wherein an end region of the stitch pole closest to an air bearing surface of the head tapers towards the main pole. In another general embodiment, a magnetic head includes a stitch pole being a laminate of at least two magnetic layers separated b a nonmagnetic layer; and a main pole formed adjacent the stitch pole. An end region of the stitch pole closest to an bearing surface of the bead tapers towards the main pole. An average angle of the taper of the end region of the stitch pole is between about 20 and about 45 degrees. Such head may be implemented in a data storage system.
    Type: Application
    Filed: July 24, 2013
    Publication date: January 29, 2015
    Applicant: HGST Netherlands B.V.
    Inventors: Venkata R. K. Gorantla, Wen-Chien D. Hsiao, Yimin Hsu, Terence T. L. Lam, Yansheng Luo, Aron Pentek, Katalin Pentek
  • Patent number: 8896966
    Abstract: Approaches for a magnetic write head having an adjacent coil architecture, wherein a coil turn is fabricated immediately adjacent to the writer main pole. The adjacent coil portion essentially lies on the main pole, except for a very thin layer of insulation atomically layered in between. The adjacent coil portion is also substantially closer to the wrap-around shield in comparison with conventional coil configurations. Further, the other upper coil portions may be fabricated to essentially lie on the stitch pole, again except for a very thin atomic layer deposited layer of insulation layered between. This adjacent coil configuration provides a writer coil configuration that concentrates the coil structure significantly closer to the main pole surface, as well as concentrates more of the coil structure closer to the main pole tip, providing for a more efficient and faster write head.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: November 25, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Edward Hin Pong Lee, Aron Pentek
  • Publication number: 20140313613
    Abstract: Approaches for a magnetic write head having an adjacent coil architecture, wherein a coil turn is fabricated immediately adjacent to the writer main pole. The adjacent portion essentially lies on the main pole, except for a very thin layer of insulation atomically layered in between. The adjacent coil portion is also substantially closer o the wrap-around shield in comparison with conventional coil configurations. Further, the other upper coil portions may be fabricated to essentially lie on the stitch pole, again except for a very thin atomic layer deposited layer of insulation layered between. This adjacent coil configuration provides a writer coil configuration that concentrates the coil structure significantly closer to the main pole surface, as well as concentrates more of the coil structure closer to the main pole tip, providing for a more efficient and faster write head.
    Type: Application
    Filed: April 19, 2013
    Publication date: October 23, 2014
    Applicant: HGST Netherlands B.V.
    Inventors: Edward Hin Pong Lee, Aron Pentek
  • Patent number: 8837084
    Abstract: A magnetic write head having a stitched magnetic pole (also referred to as a shaping layer) for conducting magnetic flux to the pole tip portion of a magnetic write pole. The stitched magnetic pole has a shape so as to be thicker in a central region that is aligned with the pole tip of the write pole and is thinner a its outer sides. This shape helps to channel magnetic flux to the pole tip portion of the write pole while maintaining sufficient pole surface area for high data rate recording.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: September 16, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Wen-Chien D. Hsiao, Aron Pentek, Katalin Pentek, Junsheng Yang
  • Patent number: 8836059
    Abstract: The present invention generally relates to a magnetic sensor in a read head having a hard or soft bias layer that is uniform in thickness within the sensor stack. The method of making such sensor is also disclosed. The free layer stripe height is first defined, followed by defining the track width, and lastly the pinned layer stripe height is defined. The pinned layer and the hard or soft bias layer are defined in the same process step. This approach eliminates a partial hard or soft bias layer and reduces potential instability issues.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: September 16, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Yongchul Ahn, Xiaozhong Dang, Yimin Hsu, Quang Le, Thomas Leong, Simon Liao, Guangli Liu, Aron Pentek
  • Patent number: 8828248
    Abstract: Write heads may be formed by reactive ion etching (RIE) a dielectric mask and then reactive ion etching a polymeric underlayer. The first RIE affects the second RIE. The first portion of the first RIE process is performed with a ratio of CF4 to CHF3 between about 1.3 to 2, a gas flow ratio of CF4 to He between 2.2 and about 3, and a ratio of RF source power to RF bias power between about 10 and about 16. The second portion of the first RIE process is performed with a ratio of CF4 to CHF3 between about 0.3 to 0.8, a gas flow ratio of CF4 to He between about 1.2 and about 1.8, and a ratio of RF source power to RF bias between about 22 to 28. With the above parameters, the dielectric mask can be formed with minimized damage on the underlayer.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: September 9, 2014
    Assignee: HGST Netherlands B.V
    Inventors: Guomin Mao, Satyanarayana Myneni, Aron Pentek, Xiaoye Zhao
  • Publication number: 20140217060
    Abstract: Write heads may be formed by reactive ion etching (RIE) a dielectric mask and then reactive ion etching a polymeric underlayer. The first RIE affects the second RIE. The first portion of the first RIE process is performed with a ratio of CF4 to CHF3 between about 1.3 to 2, a gas flow ratio of CF4 to He between 2.2 and about 3, and a ratio of RF source power to RF bias power between about 10 and about 16. The second portion of the first RIE process is performed with a ratio of CF4 to CHF3 between about 0.3 to 0.8, a gas flow ratio of CF4 to He between about 1.2 and about 1.8, and a ratio of RF source power to RF bias between about 22 to 28. With the above parameters, the dielectric mask can be formed with minimized damage on the underlayer.
    Type: Application
    Filed: February 1, 2013
    Publication date: August 7, 2014
    Applicant: HGST NETHERLANDS B.V.
    Inventors: Guomin MAO, Satyanarayana MYNENI, Aron PENTEK, Xiaoye ZHAO
  • Patent number: 8796152
    Abstract: A method for manufacturing a magnetic sensor that allows the sensor to be constructed with a very narrow track width and with smooth, well defined side walls. A tri-layer mask structure is deposited over a series of sensor layers. The tri-layer mask structure includes an under-layer, a Si containing hard mask deposited over the under-layer and a photoresist layer deposited over the Si containing hard mask. The photoresist layer is photolithographically patterned to define a photoresist mask. A first reactive ion etching is performed to transfer the image of the photoresist mask onto the Si containing hard mask. The first reactive ion etching is performed in a chemistry that includes CF4, CHF3, O2, and He. A second reactive ion etching is then performed in an oxygen chemistry to transfer the image of the Si containing hard mask onto the under-layer, and an ion milling is performed to define the sensor.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: August 5, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Guomin Mao, Aron Pentek, Thao Pham, Yi Zheng
  • Patent number: 8780499
    Abstract: A magnetic write head having a write pole and a trailing, wrap-around magnetic shield formed over the write pole and separated from the write pole by a non-magnetic trailing gap layer and non-magnetic side gap layers. The write head includes a remnant magnetic seed layer, that while being used to facilitate electroplating of the magnetic shield, is left intentionally extending beyond the back edge of the magnetic shield. This extended portion of the magnetic seed layer acts as a shunt for magnetic flux and prevents data erasure due to over-writing.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: July 15, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Wen-Chien D. Hsiao, Quan-chiu H. Lam, Terence T. L. Lam, Aron Pentek, Yi Zheng, Yuming Zhou
  • Publication number: 20140175576
    Abstract: The present invention generally relates to a magnetic sensor in a read head having a hard or soft bias layer that is uniform in thickness within the sensor stack. The method of making such sensor is also disclosed. The free layer stripe height is first defined, followed by defining the track width, and lastly the pinned layer stripe height is defined. The pinned layer and the hard or soft bias layer are defined in the same process step. This approach eliminates a partial hard or soft bias layer and reduces potential instability issues.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 26, 2014
    Applicant: HGST Netherlands B.V.
    Inventors: Yongchul AHN, Xiaozhong DANG, Yimin HSU, Quang LE, Thomas LEONG, Simon LIAO, Guangli LIU, Aron PENTEK
  • Publication number: 20140168823
    Abstract: A magnetic write head having a write pole and a trailing, wrap-around magnetic shield formed over the write pole and separated from the write pole by a non-magnetic trailing gap layer and non-magnetic side gap layers. The write head includes a remnant magnetic seed layer, that while being used to facilitate electroplating of the magnetic shield, is left intentionally extending beyond the back edge of the magnetic shield. This extended portion of the magnetic seed layer acts as a shunt for magnetic flux and prevents data erasure due to over-writing.
    Type: Application
    Filed: December 19, 2012
    Publication date: June 19, 2014
    Applicant: HGST NETHERLANDS B.V.
    Inventors: Wen-Chien D. Hsiao, Quan-chiu H. Lam, Terence T. L. Lam, Aron Pentek, Yi Zheng, Yuming Zhou
  • Publication number: 20140170774
    Abstract: A method for manufacturing a magnetic sensor that allows the sensor to be constructed with a very narrow track width and with smooth, well defined side walls. A tri-layer mask structure is deposited over a series of sensor layers. The tri-layer mask structure includes an under-layer, a Si containing hard mask deposited over the under-layer and a photoresist layer deposited over the Si containing hard mask. The photoresist layer is photolithographically patterned to define a photoresist mask. A first reactive ion etching is performed to transfer the image of the photoresist mask onto the Si containing hard mask. The first reactive ion etching is performed in a chemistry that includes CF4, CHF3, O2, and He. A second reactive ion etching is then performed in an oxygen chemistry to transfer the image of the Si containing hard mask onto the under-layer, and an ion milling is performed to define the sensor.
    Type: Application
    Filed: December 13, 2012
    Publication date: June 19, 2014
    Applicant: HGST NETHERLANDS B.V.
    Inventors: Guomin Mao, Aron Pentek, Thao Pham, Yi Zheng
  • Publication number: 20140146421
    Abstract: A magnetic write head having a stitched magnetic pole (also referred to as a shaping layer) for conducting magnetic flux to the pole tip portion of a magnetic write pole. The stitched magnetic pole has a shape so as to be thicker in a central region that is aligned with the pole tip of the write pole and is thinner a its outer sides. This shape helps to channel magnetic flux to the pole tip portion of the write pole while maintaining sufficient pole surface area for high data rate recording.
    Type: Application
    Filed: November 29, 2012
    Publication date: May 29, 2014
    Applicant: HGST NETHERLANDS B.V.
    Inventors: Wen-Chien D. Hsiao, Aron Pentek, Katalin Pentek, Junsheng Yang