Patents by Inventor Jan Zemen
Jan Zemen 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).
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Publication number: 20240102170Abstract: The present invention provides a high-crystallinity barium titanate film structure, a method of preparation and an application thereof, and relates to the field of materials and devices. The method includes the steps of depositing, on a substrate, a barium titanate layer with a (001) or (111) crystal orientation by atomic layer deposition in a high vacuum environment and at a low temperature of 450° C. or below, wherein a Ba/Ti ratio in the barium titanate layer is 0.9-1.5; and performing plasma annealing treatment on the barium titanate layer at a low temperature of 450° C. or below without breaking vacuum to form a high-crystallinity barium titanate layer having the (001) or (111) crystal orientation. The film structure may further comprise top and bottom electrodes formed above and below the barium titanate layer. The present invention solves the problem that an existing method for obtaining a crystalline BTO film is not applicable to back-end of line (BEOL) integration processes.Type: ApplicationFiled: September 20, 2023Publication date: March 28, 2024Inventors: Fengzhi Yu, Xudong Sun, Andrei Paul Mihai, Bin Zou, Jan Zemen, Kapildeb Dolui
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Patent number: 11698420Abstract: A magnetic sensor includes a piezomagnetic component which includes a first piezomagnetic element and a second piezomagnetic element that are arranged opposite to each other, a magnetostrictive component which includes a first magnetostrictive element and a second magnetostrictive element arranged opposite to each other on the same side of the first piezomagnetic element and the second piezomagnetic element, respectively, and a piezoelectric component which includes a first piezoelectric element deposited underneath the first piezomagnetic element, a second piezoelectric element deposited underneath the second piezomagnetic element, a third piezoelectric element deposited underneath the first magnetostrictive element, and a fourth piezoelectric element deposited underneath the second magnetostrictive element.Type: GrantFiled: March 9, 2022Date of Patent: July 11, 2023Assignee: LoMaRe Chip Technology Changzhou Co., Ltd.Inventors: Jan Zemen, Andrei Paul Mihai, Bin Zou
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Publication number: 20220291298Abstract: A magnetic sensor includes a piezomagnetic component which includes a first piezomagnetic element and a second piezomagnetic element that are arranged opposite to each other, a magnetostrictive component which includes a first magnetostrictive element and a second magnetostrictive element arranged opposite to each other on the same side of the first piezomagnetic element and the second piezomagnetic element, respectively, and a piezoelectric component which includes a first piezoelectric element deposited underneath the first piezomagnetic element, a second piezoelectric element deposited underneath the second piezomagnetic element, a third piezoelectric element deposited underneath the first magnetostrictive element, and a fourth piezoelectric element deposited underneath the second magnetostrictive element.Type: ApplicationFiled: March 9, 2022Publication date: September 15, 2022Inventors: Jan Zemen, Andrei Paul Mihai, Bin Zou
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Patent number: 11411171Abstract: The disclosed non-volatile memory cell comprises a storage layer of an electrically insulating polarisable material in which data is recordable as a direction of electric polarisation, preferably of ferroelectric material, arranged between a magnetically frustrated layer, preferably of Mn-based antiperovskite piezomagnetic material and a conduction electrode. The magnetically frustrated layer has a different change in density of states relative to the conduction electrode in response to a change in electric polarisation of the storage layer, such that an electron or spin tunnelling resistance across the storage layer is dependent on the direction of electric polarisation.Type: GrantFiled: August 6, 2019Date of Patent: August 9, 2022Assignee: IP2IPO Innovations LimitedInventors: Jan Zemen, Bin Zou, Andrei Mihai
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Patent number: 11152562Abstract: A non-volatile memory cell comprising: a storage layer comprised of a ferromagnetic or ferroelectric material in which data is recordable as a direction of magnetic or electric polarisation; a piezomagnetic layer comprised of an antiperovskite piezomagnetic material selectively having a first type of effect on the storage layer and a second type of effect on the storage layer dependent upon the magnetic state and strain in the piezomagnetic layer; and a strain inducing layer for inducing a strain in the piezomagnetic layer thereby to switch from the first type of effect to the second type of effect.Type: GrantFiled: December 6, 2017Date of Patent: October 19, 2021Assignee: IP2IPO Innovations LimitedInventors: Jan Zemen, Andrei Paul Mihai, Bin Zou, David Boldrin, Evgeniy Donchev
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Publication number: 20210175415Abstract: The disclosed non-volatile memory cell comprises a storage layer of an electrically insulating polarisable material in which data is recordable as a direction of electric polarisation, preferably of ferroelectric material, arranged between a magnetically frustrated layer, preferably of Mn-based antiperovskite piezomagnetic material and a conduction electrode. The magnetically frustrated layer has a different change in density of states relative to the conduction electrode in response to a change in electric polarisation of the storage layer, such that an electron or spin tunnelling resistance across the storage layer is dependent on the direction of electric polarisation.Type: ApplicationFiled: August 6, 2019Publication date: June 10, 2021Inventors: Jan ZEMEN, Bin ZOU, Andrei MIHAI
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Publication number: 20190363247Abstract: A non-volatile memory cell comprising: a storage layer comprised of a ferromagnetic or ferroelectric material in which data is recordable as a direction of magnetic or electric polarisation; a piezomagnetic layer comprised of an antiperovskite piezomagnetic material selectively having a first type of effect on the storage layer and a second type of effect on the storage layer dependent upon the magnetic state and strain in the piezomagnetic layer; and a strain inducing layer for inducing a strain in the piezomagnetic layer thereby to switch from the first type of effect to the second type of effect.Type: ApplicationFiled: December 6, 2017Publication date: November 28, 2019Inventors: Jan Zemen, Andrei Paul Mihai, Bin Zou, David Boldrin, Evgenly Donchev
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Patent number: 9093163Abstract: A method of operating a magnetoresistive device is described. The device comprises a ferromagnetic region configured to exhibit magnetic anisotropy and to allow magnetisation thereof to be switched between at least first and second orientations and a gate capacitively coupled to the ferromagnetic region. The method comprises applying an electric field pulse to the ferromagnetic region so as to cause orientation of magnetic anisotropy to change for switching magnetisation between the first and second orientations.Type: GrantFiled: January 14, 2010Date of Patent: July 28, 2015Assignees: HITACHI, LTD., UNIVERSITE PARIS SUD XI, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Joerg Wunderlich, Jan Zemen, Claude Chappert, Bryan Gallagher, Thibaut Devolder, David Williams
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Patent number: 8138758Abstract: A method of operating a magnetoresistive device is described. The device comprises a ferromagnetic region configured to exhibit magnetic anisotropy and to allow magnetisation thereof to be switched between at least first and second orientations and a gate capacitively coupled to the ferromagnetic region. The method comprises applying an electric field pulse to the ferromagnetic region so as to cause orientation of magnetic anisotropy to change for switching magnetisation between the first and second orientations.Type: GrantFiled: March 18, 2008Date of Patent: March 20, 2012Assignees: Hitachi, Ltd., Universite Paris Sud XI, Centre National de la Recherche ScientifiqueInventors: Joerg Wunderlich, Tomas Jungwirth, Jan Zemen, Bryan Gallagher, Claude Chappert, Thibaut Devolder
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Publication number: 20110170339Abstract: A method of operating a magnetoresistive device is described. The device comprises a ferromagnetic region configured to exhibit magnetic anisotropy and to allow magnetisation thereof to be switched between at least first and second orientations and a gate capacitively coupled to the ferromagnetic region. The method comprises applying an electric field pulse to the ferromagnetic region so as to cause orientation of magnetic anisotropy to change for switching magnetisation between the first and second orientations.Type: ApplicationFiled: January 14, 2010Publication date: July 14, 2011Inventors: Joerg Wunderlich, Jan Zemen, Claude Chappert, Bryan Gallagher, Thibaut Devolder, David Williams
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Publication number: 20090016098Abstract: A method of operating a magnetoresistive device is described. The device comprises a ferromagnetic region configured to exhibit magnetic anisotropy and to allow magnetisation thereof to be switched between at least first and second orientations and a gate capacitively coupled to the ferromagnetic region. The method comprises applying an electric field pulse to the ferromagnetic region so as to cause orientation of magnetic anisotropy to change for switching magnetisation between the first and second orientations.Type: ApplicationFiled: March 18, 2008Publication date: January 15, 2009Inventors: Joerg Wunderlich, Tomas Jungwirth, Jan Zemen, Bryan Gallagher, Claude Chappert, Thibaut Devolder