Patent classifications
H10N52/80
Spin orbit memory devices with reduced magnetic moment and methods of fabrication
A spin orbit memory device includes a material layer stack on a spin orbit electrode. The material layer stack includes a magnetic tunnel junction (MTJ) and a synthetic antiferromagnetic (SAF) structure on the MTJ. The SAF structure includes a first magnet structure and a second magnet structure separated by an antiferromagnetic coupling layer. The first magnet structure includes a first magnet and a second magnet separated by a single layer of a non-magnetic material such as platinum. The second magnet structure includes a stack of bilayers, where each bilayer includes a layer of platinum on a layer of a magnetic material such.
STACKED DIE ASSEMBLY
A sensor device comprising: a lead frame; a first/second semiconductor die having a first/second sensor structure at a first/second sensor location, and a plurality of first/second bond pads electrically connected to the lead frame; the semiconductor dies having a square or rectangular shape with a geometric center; the sensor locations are offset from the geometrical centers; the second die is stacked on top of the first die, and is rotated by a non-zero angle and optionally also offset or shifted with respect to the first die, such that a perpendicular projection of the first and second sensor location coincide.
STACKED DIE ASSEMBLY
A sensor device comprising: a lead frame; a first/second semiconductor die having a first/second sensor structure at a first/second sensor location, and a plurality of first/second bond pads electrically connected to the lead frame; the semiconductor dies having a square or rectangular shape with a geometric center; the sensor locations are offset from the geometrical centers; the second die is stacked on top of the first die, and is rotated by a non-zero angle and optionally also offset or shifted with respect to the first die, such that a perpendicular projection of the first and second sensor location coincide.
SIGNAL COMPENSATION SYSTEM CONFIGURED TO MEASURE AND COUNTERACT ASYMMETRY IN HALL SENSORS
A sensor cross-talk compensation system includes a semiconductor substrate having a first main surface and a second main surface opposite to the first main surface; a vertical Hall sensor element disposed in the semiconductor substrate, the vertical Hall sensor element is configured to generate a sensor signal in response to a magnetic field impinging thereon; and an asymmetry detector configured to detect an asymmetric characteristic of the vertical Hall sensor element. The asymmetry detector includes a detector main region that vertically extends into the semiconductor substrate from the first main surface towards the second main surface and is of a conductivity type having a first doping concentration; and at least three detector contacts disposed in the detector main region at the first main surface, the at least three detector contacts are ohmic contacts of the conductivity type having a second doping concentration that is higher than the first doping concentration.
Leadframes with folded conductor portion and devices therefrom
A leadframe includes leads or lead terminals, a plurality of folded features including i) support features positioned within an area defined in at least one dimension by the leads or the lead terminals configured for supporting at least one of a die pad and a first pad and a second pad spaced apart from one another, or ii) current carrying features. At least one of the folded features includes a planar portion and a folded edge structure that curves upwards at an angle of at least 45° relative to the planar portion. The folded features are configured to provide an effective increase in thickness to reduce the deformation observed in assembly.
MULTIFERROIC TUNNEL JUNCTION MEMORY DEVICE AND RELATED METHODS
An electronic device may include a first electrode, a first magnetostrictive layer electrically coupled to the first electrode, a first ferroelectric layer above the first ferromagnetic layer, and a ferromagnetic layer above the first ferroelectric layer. The electronic device may further include a second electrode electrically coupled to the ferromagnetic layer, a second ferroelectric layer above the ferromagnetic layer, a second magnetostrictive layer above the second ferroelectric layer, and a third electrode electrically coupled to the second magnetostrictive layer. The first ferroelectric layer may be switchable between different polarization states responsive to a first voltage applied across the first and second electrodes, and the second ferroelectric layer may be switchable between different polarization states responsive to a second voltage applied across the second and third electrodes.
MULTIFERROIC TUNNEL JUNCTION MEMORY DEVICE AND RELATED METHODS
An electronic device may include a first electrode, a first magnetostrictive layer electrically coupled to the first electrode, a first ferroelectric layer above the first ferromagnetic layer, and a ferromagnetic layer above the first ferroelectric layer. The electronic device may further include a second electrode electrically coupled to the ferromagnetic layer, a second ferroelectric layer above the ferromagnetic layer, a second magnetostrictive layer above the second ferroelectric layer, and a third electrode electrically coupled to the second magnetostrictive layer. The first ferroelectric layer may be switchable between different polarization states responsive to a first voltage applied across the first and second electrodes, and the second ferroelectric layer may be switchable between different polarization states responsive to a second voltage applied across the second and third electrodes.
MAGNETIC LAMINATED FILM, MAGNETIC MEMORY ELEMENT, MAGNETIC MEMORY, AND ARTIFICIAL INTELLIGENCE SYSTEM
A magnetic multilayer film for a magnetic memory element includes an amorphous heavy metal layer having a multilayer structure in which a plurality of first layers containing Hf alternate repeatedly with a plurality of second layers containing a heavy metal excluding Hf; and a recording layer that includes a ferromagnetic layer and that is adjacent to the heavy metal layer, the ferromagnetic layer having a variable magnetization direction.
MEMORY DEVICE AND FORMATION METHOD THEREOF
A memory device includes a spin-orbit-transfer (SOT) bottom electrode, an SOT ferromagnetic free layer, a first tunnel barrier layer, a spin-transfer-torque (STT) ferromagnetic free layer, a second tunnel barrier layer and a reference layer. The SOT ferromagnetic free layer is over the SOT bottom electrode. The SOT ferromagnetic free layer has a magnetic orientation switchable by the SOT bottom electrode using a spin Hall effect or Rashba effect. The first tunnel barrier layer is over the SOT ferromagnetic free layer. The STT ferromagnetic free layer is over the first tunnel barrier layer and has a magnetic orientation switchable using an STT effect. The second tunnel barrier layer is over the STT ferromagnetic free layer. The second tunnel barrier layer has a thickness different from a thickness of the first tunnel barrier layer. The reference layer is over the second tunnel barrier layer and has a fixed magnetic orientation.
Semiconductor device and manufacturing method of semiconductor device
Semiconductor device includes pair of active devices, composite spin Hall electrode, and a magnetic tunnel junction. Composite spin Hall electrode is electrically connected to pair of active devices. Magnetic tunnel junction is disposed on opposite side of composite spin hall electrode with respect to pair of active devices. Spin Hall electrode includes pair of heavy metal layers, and spacer layer disposed in between pair of heavy metal layers. Pair of heavy metal layers is made of a heavy metal in a metastable state. Spacer layer comprises first material different from the pair of heavy metal layers.