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US 8,411,481 B2Granted
Information storage devices using magnetic domain wall movement and methods of manufacturing the same
AssigneeSamsung Electronics Co., Ltd.
InventorChee-kheng Lim
Life of this patent
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Abstract
In an information storage device, a writing magnetic layer is formed on a substrate and has a magnetic domain wall. A connecting magnetic layer is formed on the writing magnetic layer, and an information storing magnetic layer is formed on an upper portion of side surfaces of the connecting magnetic layer. A reader reads information stored in the information storing magnetic layer.
Claims16
A method of manufacturing an information storage device, the method comprising:
- forming a writing magnetic layer on a substrate;
- forming a first insulating layer on the substrate, the first insulating layer covering the writing magnetic layer;
- forming an opening in the first insulating layer, the opening exposing the writing magnetic layer and including at least a first groove, the first grove being formed in a second groove, and the first groove having a width less than a width of the second groove;
- forming a first connecting magnetic layer in the first groove;
- forming a second connecting magnetic layer on the first connecting magnetic layer;
- forming a ring-type magnetic layer covering a side surface of the second connecting magnetic layer and a sidewall of the second groove;
- and
- removing an end portion of the ring-type magnetic layer.
5 more elements
A method of manufacturing an information storage device, the method comprising:
- forming a writing magnetic layer on a substrate;
- forming a first insulating layer on the substrate, the first insulating layer covering the writing magnetic layer;
- forming a first groove in the first insulating layer, the first groove exposing the writing magnetic layer;
- forming a first connecting magnetic layer in the first groove;
- forming a second insulating layer on the first magnetic connecting layer and the first insulating layer;
- forming a second groove in the second insulating layer, the second groove exposing the first connecting magnetic layer and at least a portion of the first insulating layer;
- forming a second connecting magnetic layer on the first connecting magnetic layer in the second groove;
- forming a ring-type magnetic layer covering a side surface of the second connecting magnetic layer and a sidewall of the second groove;
- and
- removing an end portion of the ring-type magnetic layer.
7 more elements
Dependencies are inferred from the claim text.