公开(公告)号：US20190140166A1

公开(公告)日：2019-05-09

申请号：US16097801

申请日：2016-07-01

Applicant: MD Tofizur RAHMAN ,  Christopher J. WIEGAND ,  Brian MAERTZ ,  Daniel G. OUELLETTE ,  Kaan OGUZ ,  Brian S. DOYLE ,  Mark L. DOCZY ,  Daniel B. BERGSTROM ,  Justin S. BROCKMAN ,  Oleg GOLONZKA ,  Tahhir GHANI ,  Intel Corporation

Inventor： MD Tofizur RAHMAN ,  Christopher J. WIEGAND ,  Brian MAERTZ ,  Daniel G. OUELLETTE ,  Kevin P. O'BRIEN ,  Kaan OGUZ ,  Brian S. DOYLE ,  Mark L. DOCZY ,  Daniel B. BERGSTROM ,  Justin S. BROCKMAN ,  Oleg GOLONZKA ,  Tahir GHANI

IPC: H01L43/12 ,  H01L43/10 ,  H01L43/08 ,  H01L43/02 ,  G11C11/16

CPC classification number: H01L43/12 ,  G11C11/161 ,  H01L43/02 ,  H01L43/08 ,  H01L43/10

Abstract: Material layer stack structures to provide a magnetic tunnel junction (MTJ) having improved perpendicular magnetic anisotropy (PMA) characteristics. In an embodiment, a free magnetic layer of the material layer stack is disposed between a tunnel barrier layer and a cap layer of magnesium oxide (Mg). The free magnetic layer includes a Cobalt-Iron-Boron (CoFeB) body substantially comprised of a combination of Cobalt atoms, Iron atoms and Boron atoms. A first Boron mass fraction of the CoFeB body is equal to or more than 25% (e.g., equal to or more than 27%) in a first region which adjoins an interface of the free magnetic layer with the tunnel barrier layer. In another embodiment, the first Boron mass fraction is more than a second Boron mass fraction in a second region of the CoFeB body which adjoins an interface of the free magnetic layer with the cap layer.

公开(公告)号：US20190378972A1

公开(公告)日：2019-12-12

申请号：US16463326

申请日：2016-12-30

Applicant: Intel Corporation

Inventor： MD Tofizur RAHMAN ,  Christopher J. WIEGAND ,  Kaan OGUZ ,  Daniel G. OUELLETTE ,  Brian MAERTZ ,  Kevin P. O'BRIEN ,  Mark L. DOCZY ,  Brian S. DOYLE ,  Oleg GOLONZKA ,  Tahir GHANI

IPC: H01L43/02 ,  H01L27/22 ,  H01L43/10 ,  H01L43/12 ,  H01F10/32

Abstract: A material layer stack for a pSTTM device includes a fixed magnetic layer, a tunnel barrier disposed above the fixed magnetic layer and a free layer disposed on the tunnel barrier. The free layer further includes a stack of bilayers where an uppermost bilayer is capped by a magnetic layer including iron and where each of the bilayers in the free layer includes a non-magnetic layer such as Tungsten, Molybdenum disposed on the magnetic layer. In an embodiment, the non-magnetic layers have a combined thickness that is less than 15% of a combined thickness of the magnetic layers in the stack of bi-layers. A stack of bilayers including non-magnetic layers in the free layer can reduce the saturation magnetization of the material layer stack for the pSTTM device and subsequently increase the perpendicular magnetic anisotropy.

公开(公告)号：US20190334079A1

公开(公告)日：2019-10-31

申请号：US16463821

申请日：2016-12-30

Applicant: Intel Corporation

Inventor： MD Tofizur RAHMAN ,  Christopher J. WIEGAND ,  Kaan OGUZ ,  Justin S. BROCKMAN ,  Daniel G. OUELLETTE ,  Brian MAERTZ ,  Kevin P. O'BRIEN ,  Mark L. DOCZY ,  Brian S. DOYLE ,  Oleg GOLONZKA ,  Tahir GHANI

IPC: H01L43/02 ,  H01L43/10 ,  H01L43/12 ,  G11C11/16

Abstract: A material layer stack for a pSTTM memory device includes a magnetic tunnel junction (MTJ) stack, a oxide layer, a protective layer and a capping layer. The MTJ includes a fixed magnetic layer, a tunnel barrier disposed above the fixed magnetic layer and a free magnetic layer disposed on the tunnel barrier. The oxide layer, which enables an increase in perpendicularity of the pSTTM material layer stack, is disposed on the free magnetic layer. The protective layer is disposed on the oxide layer, and acts as a protective barrier to the oxide from physical sputter damage during subsequent layer deposition. A conductive capping layer with a low oxygen affinity is disposed on the protective layer to reduce iron-oxygen de-hybridization at the interface between the free magnetic layer and the oxide layer. The inherent non-oxygen scavenging nature of the conductive capping layer enhances stability and reduces retention loss in pSTTM devices.

公开(公告)号：US20190036010A1

公开(公告)日：2019-01-31

申请号：US16072301

申请日：2016-04-01

Applicant: Intel Corporation

Inventor： Brian MAERTZ ,  Christopher J. WIEGAND ,  Daniel G. OEULLETTE ,  MD Tofizur RAHMAN ,  Oleg GOLONZKA ,  Justin S. BROCKMAN ,  Tahir GHANI ,  Brian S. DOYLE ,  Kevin P. O'BRIEN ,  Mark L. DOCZY ,  Kaan OGUZ

IPC: H01L43/02 ,  H01L27/22 ,  H01L43/08 ,  H01L43/10 ,  H01L43/12

CPC classification number: H01L43/02 ,  H01L27/228 ,  H01L43/08 ,  H01L43/10 ,  H01L43/12

Abstract: An apparatus including an array of memory cells arranged in a grid defined by word lines and bit lines in a generally orthogonal orientation relative to one another, a memory cell including a resistive memory component and an access transistor, wherein the access transistor includes a diffusion region disposed at an acute angle relative to an associated word line. A method including etching a substrate to form a plurality of fins each including a body having a length dimension including a plurality of first junction regions and a plurality of second junction regions that are generally parallel to one another and offset by angled channel regions displacing in the length dimension an end of a first junction region from the beginning of a second junction region; removing the spacer material; and introducing a gate electrode on the channel region of each of the plurality of fins.

公开(公告)号：US20190027679A1

公开(公告)日：2019-01-24

申请号：US16070415

申请日：2016-03-30

Applicant: Intel Corporation

Inventor： Daniel G. OUELLETTE ,  Christopher J. WIEGAND ,  MD Tofizur RAHMAN ,  Brian MAERTZ ,  Oleg GOLONZKA ,  Justin S. BROCKMAN ,  Kevin P. O'BRIEN ,  Brian S. DOYLE ,  Kaan OGUZ ,  Tahir GHANI ,  Mark L. DOCZY

IPC: H01L43/02 ,  H01L27/22 ,  H01L43/08 ,  H01L43/12 ,  H01L43/10

Abstract: Approaches for strain engineering of perpendicular magnetic tunnel junctions (pMTJs), and the resulting structures, are described. In an example, a memory structure includes a perpendicular magnetic tunnel junction (pMTJ) element disposed above a substrate. A lateral strain-inducing material layer is disposed on the pMTJ element. An inter-layer dielectric (ILD) layer is disposed laterally adjacent to both the pMTJ element and the lateral strain-inducing material layer. The ILD layer has an uppermost surface co-planar or substantially co-planar with an uppermost surface of the lateral strain-inducing material layer.