Abstract:
Spin Torque Transfer (STT) memory cell structures and methods are described herein. One or more STT memory cell structures include a tunneling barrier material positioned between a ferromagnetic storage material and a pinned ferromagnetic material in contact with an antiferromagnetic material and a multiferroic material in contact with the ferromagnetic storage material, wherein the antiferromagnetic material, the ferromagnetic storage material, and the pinned ferromagnetic material are located between a first electrode and a second electrode.
Abstract:
Select devices including an open volume that functions as a high bandgap material having a low dielectric constant are disclosed. The open volume may provide a more nonlinear, asymmetric I-V curve and enhanced rectifying behavior in the select devices. The select device may comprise, for example, a metal insulator insulator metal (MIIM) device. Various methods may be used to form select devices and memory systems including such select devices. Memory devices and electronic systems include such select devices.
Abstract:
A pattern having exceptionally small features is formed on a partially fabricated integrated circuit (102) during integrated circuit fabrication. The pattern comprises features (162), (164) formed by self-organizing material, such as diblock copolymers. The organization of the copolymers is directed by spacers (152) which have been formed by a pitch multiplication process in which the spacers (152) are formed at the sides of sacrificial mandrels (142), which are later removed to leave the spaced-apart, free-standing spacers (152). Diblock copolymers, composed of two immiscible block species, are deposited over and in the space between the spacers (152). The copolymers are made to self-organize, with each block species aggregating with other block species of the same type.
Abstract:
A method of fabricating a substrate includes forming spaced first features over a substrate. An alterable material is deposited over the spaced first features and the alterable material is altered with material from the spaced first features to form altered material on sidewalls of the spaced first features. A first material is deposited over the altered material, and is of some different composition from that of the altered material. The first material is etched to expose the altered material and spaced second features comprising the first material are formed on sidewalls of the altered material. Then, the altered material is etched from between the spaced second features and the spaced first features. The substrate is processed through a mask pattern comprising the spaced first features and the spaced second features. Other embodiments are disclosed.
Abstract:
Some embodiments include methods of forming diodes. The methods may include oxidation of an upper surface of a conductive electrode to form an oxide layer over the conductive electrode. In some embodiments, the methods may include formation of an oxidizable material over a conductive electrode, and subsequent oxidation of the oxidizable material to form an oxide layer over the conductive electrode. In some embodiments, the methods may include formation of a metal halide layer over a conductive electrode. Some embodiments include diodes that contain a metal halide layer between a pair of diode electrodes.
Abstract:
Methods of controlling critical dimensions of reduced-sized features during semiconductor fabrication through pitch multiplication are disclosed. Pitch multiplication is accomplished by patterning mask structures via conventional photoresist techniques and subsequently transferring the pattern to a sacrificial material. Spacer regions are then formed on the vertical surfaces of the transferred pattern following the deposition of a conformal material via atomic layer deposition. The spacer regions, and therefore the reduced features, are then transferred to a semiconductor substrate.
Abstract:
A method of fabricating a memory cell including forming nanodots (106) over a first dielectric layer (104) and forming an intergate dielectric layer (110) over the nanodots, where the intergate dielectric layer encases the nanodots. To form sidewalls of the memory cell, a portion of the intergate dielectric layer is removed with a dry etch, where the sidewalls include a location where a nanodot has been deposited. A spacing layer (120) is formed over the sidewalls to cover the location where a nanodot has been deposited and the remaining portion of the intergate dielectric layer and the nanodots can be removed with an etch selective to the intergate dielectric layer. The spacing layer can fill hollows or voids (119) where a nanodot has been removed at the sidewall, thereby preventing the loss of data retention in the cell.
Abstract:
A method of imaging and identifying defects and contamination on the surface of an integrated circuit is described. The method may be used on areas smaller than one micron in diameter. An energetic beam, such as an electron beam, is directed at a selected IC location having a layer of a solid, fluid or gaseous reactive material formed over the surface. The energetic beam disassociates the reactive material in the region into chemical radicals that either chemically etch the surface preferentially, or deposit a thin layer of a conductive material over the local area around the energetic beam. The surface may be examined as various layers are selectively etched to decorate defects and/or as various layers are locally deposited in the area around the energetic beam. SEM imaging and other analytic methods may be used to identify the problem more easily.
Abstract:
The invention includes methods in which metal oxide dielectric materials (50) are deposited over barrier layers (48). The barrier layers can comprise compositions of metal and one or more of carbon, boron and nitrogen, and the metal oxide of the dielectric material can comprise the same metal as the barrier layer. The dielectric material/barrier layer constructions can be incorporated into capacitors. The capacitors can be used in, for example, DRAM cells, which in turn can be used in electronic systems.
Abstract:
The invention includes methods of forming a conductive silicide layers on silicon comprising substrates, and methods of forming conductive silicide contacts. In one implementation, a method of forming a conductive silicide layer on a silicon comprising substrate includes reacting oxygen with silicon of a silicon comprising substrate to form oxides of silicon from silicon of the substrate. The oxides of silicon include stoichiometric silicon dioxide and substoichiometric silicon dioxide. The stoichiometric silicon dioxide and substoichiometric silicon dioxide are exposed to ozone to transform at least some of the substoichiometric silicon dioxide to stoichiometric silicon dioxide. After the exposing, a conductive metal silicide is formed in electrical connection with silicon of the silicon comprising substrate. In one implementation, a method of forming a conductive silicide layer on a silicon comprising substrate includes reacting oxygen with silicon of a silicon comprising substrate to form oxides of silicon from silicon of the substrate. The oxides of silicon include stoichiometric silicon dioxide and substoichiometric silicon dioxide. The stoichiometric silicon dioxide and substoichiometric silicon dioxide are exposed to O2 plasma to transform at least some of the substoichiometric silicon dioxide to stoichiometric silicon dioxide. After the exposing, a metal is reacted with silicon of the substrate to form a conductive metal silicide.