摘要:
A non-volatile memory cell stores 1.5 bits of data in three polarization states. The memory cell may have two ferroelectric layers and three electrodes. The energy bands of the ferroelectric layers are adjusted by providing two of the electrodes with different work functions. The difference in the work functions may be significant, such as at least 0.4-0.6 V or more. Two of the electrodes may have equal or similar work functions. For example, the work functions may be equal within a tolerance of +/- 0.1 V. The memory cell can be arranged in various configurations including a FeFET (ferroelectric field effect transistor) and a FeRAM (ferroelectric random access memory). A set of memory cells can be arranged in a string such as a NAND string.
摘要:
A monocrystalline metal-oxide stack including a ferroelectric (FE) tunneling layer and a buffer layer is epitaxially grown on a growth substrate. A first poly crystalline metal electrode layer is deposited over the tunneling layer. A bonding material layer is further deposited over the electrode layer. The bonding material layer is then bonded to a material layer on a front or back side of a host substrate that further comprises a transistor cell. Once bonded, the growth substrate may be removed from the metal-oxide stack to complete a transfer of the metal-oxide stack from the growth substrate to the host substrate. A second poly crystalline metal electrode layer is then deposited over the exposed buffer layer, placing both electrodes in close proximity to the FE tunneling layer.
摘要:
A method used in forming an electronic component comprising conductive material and ferroelectric material comprises forming a non-ferroelectric metal oxide-comprising insulator material over a substrate. A composite stack comprising at least two different composition non-ferroelectric metal oxides is formed over the substrate. The composite stack has an overall conductivity of at least 1 x 10 2 Siemens/cm. The composite stack is used to render the non- ferroelectric metal oxide-comprising insulator material to be ferroelectric. Conductive material is formed over the composite stack and the insulator material. Ferroelectric capacitors and ferroelectric field effect transistors independent of method of manufacture are also disclosed.
摘要:
A ferroelectric memory cell comprises a ferroelectric crystalline material having a polar and chiral crystal structure without inversion symmetry through an inversion center. The ferroelectric crystalline material does not consist essentially of an oxide of at least one of hafnium (Hf) and zirconium (Zr).
摘要:
A method of controlling ferroelectric characteristics of integrated circuit device components includes forming a ferroelectrically controllable dielectric layer over a substrate; and forming a stress exerting structure proximate the ferroelectrically controllable dielectric layer such that a substantially uniaxial strain is induced in the ferroelectrically controllable dielectric layer by the stress exerting structure; wherein the ferroelectrically controllable dielectric layer comprises one or more of: a ferroelectric oxide layer and a normally non-ferroelectric material layer that does not exhibit ferroelectric properties in the absence of an applied stress.
摘要:
Разработан способ неразрушаемого счшъшания информации с ферроэлектрической ячейки памяти, снабженной электродами, в котором подают считывающее электрическое напряжение на ее электроды для генерации упругой деформации ферроэлектрической ячейкой памяти и регистрирует данную упругую деформацию полевым транзистором с плавающим затвором и/или проводящи каналом выполненных из материала с пьезоэлектрическими свойствами и по величине тока протекающего через транзистор определяют степень и характер поляризации ферроэлектрической ячейки памяти. Ферроэлектрический элемент памяти содержит полевой транзистор, к которому добавлен пьезоэлемент (1a), являющийся ячейкой памяти Плавающий затвор (1) выполнен на основе пьезоэлектрического материала. Ячейка памяти имеет трехслойную структуру, состоящую из двух электродов (2а) и (26), между которыми расположен пьезоэлектрик, который выполнен из ферроэлектрического материала и расположен поверх плавающего затвора (1) транзистора (Фиг. 1a). Предложенный способ обмена информацией по акустическому каналу, позволяет создать быстрый метод обмена информацией не только между ячейко памяти и считывающим транзистором, но может быть основой метода для обмен информацией в многослойных схемах микропроцессоров и/или между массиво памяти и микропроцессором.
摘要:
The present invention generally relates to nanotechnology and submicroelectronic devices that can be used in circuitry and, in some cases, to nanoscale wires and other nanostructures able to encode data. One aspect of the invention provides a nanoscale wire or other nanostructure having a region that is electrically-polarizable, for example, a nanoscale wire may comprise a core and an electrically-polarizable shell. In some cases, the electrically-polarizable region is able to retain its polarization state in the absence of an external electric field. All, or only a portion, of the electricallypolarizable region may be polarized, for example, to encode one or more bits of data. In one set of embodiments, the electrically-polarizable region comprises a functional oxide or a ferroelectric oxide material, for example, BaTiO 3 , lead zirconium titanate, or the like. In some embodiments, the nanoscale wire (or other nanostructure) may further comprise other materials, for example, a separation region separating the electricallypolarizable region from other regions of the nanoscale wire. For example, in a nanoscale wire, one or more intermediate shells may separate the core from the electricallypolarizable shell.
摘要:
Disclosed relates to a ferroelectric memory device that is manufactured easily, operates at low voltage and has excellent data preservation period, and a method of manufacturing the same. In the present invention, a ferroelectric layer (60) is formed on a part corresponding to a channel region (4) on the silicon substrate (1). The ferroelectric layer (60) made of an organic material such as PVDF, etc. shows polarization characteristics at low voltage below 1V, and such polarization characteristics continue over a specific time period, not changed as time goes by. Accordingly, it is possible to manufacture a ferroelectric memory device that operates at low voltage and is manufactured with a simplified structure in a simplified method.