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公开(公告)号:US10553642B2
公开(公告)日:2020-02-04
申请号:US15787524
申请日:2017-10-18
Applicant: Samsung Electronics Co., LTD.
Inventor: Don Koun Lee , Mohamad Towfik Krounbi , Xueti Tang , Gen Feng , Ikhtiar
Abstract: A magnetic junction, a memory using the magnetic junction and method for providing the magnetic junction are described. The magnetic junction resides on a substrate and is usable in a magnetic device. The magnetic junction includes a reference layer, a nonmagnetic spacer layer and a M-containing oxide layer adjacent to the free layer. M includes at least one of Ti, Al, Hf, Zr, Mo, V and Nb. The free layer is switchable between a plurality of stable magnetic states when a write current is passed through the magnetic junction. The nonmagnetic spacer layer is between the reference layer and the free layer. The free layer is between the nonmagnetic spacer layer and the M-containing oxide layer.
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公开(公告)号:US20190067366A1
公开(公告)日:2019-02-28
申请号:US15787524
申请日:2017-10-18
Applicant: Samsung Electronics Co., LTD.
Inventor: Don Koun Lee , Mohamad Towfik Krounbi , Xueti Tang , Gen Feng , Ikhtiar
Abstract: A magnetic junction, a memory using the magnetic junction and method for providing the magnetic junction are described. The magnetic junction resides on a substrate and is usable in a magnetic device. The magnetic junction includes a reference layer, a nonmagnetic spacer layer and a M-containing oxide layer adjacent to the free layer. M includes at least one of Ti, Al, Hf, Zr, Mo, V and Nb. The free layer is switchable between a plurality of stable magnetic states when a write current is passed through the magnetic junction. The nonmagnetic spacer layer is between the reference layer and the free layer. The free layer is between the nonmagnetic spacer layer and the M-containing oxide layer.
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3.
公开(公告)号:US20190066747A1
公开(公告)日:2019-02-28
申请号:US15974589
申请日:2018-05-08
Applicant: Samsung Electronics Co., LTD.
Inventor: Don Koun Lee , Mohamad Towfik Krounbi
Abstract: A magnetic device and method for providing the magnetic device junction are described. The magnetic device includes magnetic junctions and spin-orbit interaction (SO) active layer(s). The magnetic junction includes a pinned layer, a perpendicular enhancement layer (PEL), an insertion layer between the pinned layer and PEL, a free layer and a nonmagnetic spacer layer between the PEL and free layer. The insertion layer includes at least one magnetic material and at least one high crystallization temperature nonmagnetic material. The PEL is between the insertion layer and the nonmagnetic spacer layer. The free layer is switchable between a plurality of stable magnetic states. The PEL and free and pinned layers each has a perpendicular magnetic anisotropy energy greater than its out-of-plane demagnetization energy. The SO active layer(s) are adjacent to the free layer, carry a current in-plane and exert a SO torque on the free layer due to the current.
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公开(公告)号:US09972773B1
公开(公告)日:2018-05-15
申请号:US15787598
申请日:2017-10-18
Applicant: Samsung Electronics Co., LTD.
Inventor: Don Koun Lee , Mohamad Towfik Krounbi
CPC classification number: H01L43/08 , G11C7/04 , G11C11/161 , G11C11/1675 , H01L27/222 , H01L43/02 , H01L43/10 , H01L43/12
Abstract: A magnetic junction, a memory using the magnetic junction and method for providing the magnetic junction are described. The magnetic junction includes a pinned layer, a perpendicular enhancement layer (PEL), an insertion layer between the pinned layer and PEL, a free layer and a nonmagnetic spacer layer between the PEL and free layer. The insertion layer includes at least one magnetic material and at least one high crystallization temperature nonmagnetic material. The PEL is between the insertion layer and the nonmagnetic spacer layer. The free layer is switchable between a plurality of stable magnetic states when a write current is passed through the magnetic junction. The PEL and free and pinned layers each has a perpendicular magnetic anisotropy energy greater than its out-of-plane demagnetization energy.
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公开(公告)号:US10297301B2
公开(公告)日:2019-05-21
申请号:US15974589
申请日:2018-05-08
Applicant: Samsung Electronics Co., LTD.
Inventor: Don Koun Lee , Mohamad Towfik Krounbi
Abstract: A magnetic device and method for providing the magnetic device junction are described. The magnetic device includes magnetic junctions and spin-orbit interaction (SO) active layer(s). The magnetic junction includes a pinned layer, a perpendicular enhancement layer (PEL), an insertion layer between the pinned layer and PEL, a free layer and a nonmagnetic spacer layer between the PEL and free layer. The insertion layer includes at least one magnetic material and at least one high crystallization temperature nonmagnetic material. The PEL is between the insertion layer and the nonmagnetic spacer layer. The free layer is switchable between a plurality of stable magnetic states. The PEL and free and pinned layers each has a perpendicular magnetic anisotropy energy greater than its out-of-plane demagnetization energy. The SO active layer(s) are adjacent to the free layer, carry a current in-plane and exert a SO torque on the free layer due to the current.
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公开(公告)号:US10164177B2
公开(公告)日:2018-12-25
申请号:US15445695
申请日:2017-02-28
Applicant: Samsung Electronics Co., LTD.
Inventor: Sebastian Schafer , Dmytro Apalkov , Vladimir Nikitin , Don Koun Lee
Abstract: A magnetic junction usable in a magnetic device and a method for providing the magnetic junction are described. A first portion of a magnetoresistive stack corresponding to the magnetic junction is provided. Providing this portion of the magnetoresistive stack includes providing at least one layer for a free layer of the magnetic junction. A second portion of the magnetoresistive stack is provided after the step of providing the first portion of the magnetoresistive stack. The magnetoresistive stack is patterned to provide the magnetic junction after the step of providing the second portion of the magnetoresistive stack. An ambient temperature for the magnetoresistive stack and the magnetic junction does not exceed a crystallization temperature of the free layer after the step of providing the free layer through the step of patterning the magnetoresistive stack. The magnetic junction is annealed at an anneal temperature not less than the crystallization temperature after the step of patterning the magnetoresistive stack.
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7.
公开(公告)号:US20180205009A1
公开(公告)日:2018-07-19
申请号:US15445695
申请日:2017-02-28
Applicant: Samsung Electronics Co., LTD.
Inventor: Sebastian Schafer , Dmytro Apalkov , Vladimir Nikitin , Don Koun Lee
CPC classification number: H01L43/12 , G11C11/161 , H01L43/02 , H01L43/08 , H01L43/10
Abstract: A magnetic junction usable in a magnetic device and a method for providing the magnetic junction are described. A first portion of a magnetoresistive stack corresponding to the magnetic junction is provided. Providing this portion of the magnetoresistive stack includes providing at least one layer for a free layer of the magnetic junction. A second portion of the magnetoresistive stack is provided after the step of providing the first portion of the magnetoresistive stack. The magnetoresistive stack is patterned to provide the magnetic junction after the step of providing the second portion of the magnetoresistive stack. An ambient temperature for the magnetoresistive stack and the magnetic junction does not exceed a crystallization temperature of the free layer after the step of providing the free layer through the step of patterning the magnetoresistive stack. The magnetic junction is annealed at an anneal temperature not less than the crystallization temperature after the step of patterning the magnetoresistive stack.
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