EP0409018A2
Expired / Lapsed
EP
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Electrodes for electrical ceramic oxide devices
Assignee: National Semiconductor Corp
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Filing: 1990-07-07
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Granted: —
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Expires: 2010-07-07
Abstract
Abstract Electrodes composed of ruthenium, iridium, osmium, or rhodium and the electrically conductive oxides of these metals are particularly well-suited to use in electrical ceramic oxide devices because of the low resistivity of the oxides and the stability of the oxides under the processing conditions necessary to optimize performance of electrical ceramic oxide materials.
Inventors
- 👤 William H. Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 17:41
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/008; H10; H10D; H10D64/00; H10D64/01; H10D64/011; H10D86/00; H10D86/80; H10D86/85; H10N; H10N30/00; H10N30/01; H10N30/06; H10N60/00; H10N60/01; H10N60/0268; H10N60/0744; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435; Y10T428/00; Y10T428/26; Y10T428/268
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
65 words
An electrical ceramic oxide device including a first body of an electrical ceramic oxide material; an electrical conductive lead means; and a second body of an interfacing material connecting said first body to said lead means, wherein said second body includes a first portion of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide.
Claim 2
Dependent Claim
65 words
An electrical ceramic oxide device including a first body of an electrical ceramic oxide material; an electrical conductive lead means; and a second body of an interfacing material connecting said first body to said lead means, wherein said second body includes a first portion of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide.
Claim 3
Dependent Claim
87 words
An electrical ceramic oxide device as claimed in claim 1, wherein said first portion of said second body is selected from the group consisting of ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide, and said second body further includes a second portion of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium, said second portion disposed between said lead means and said first portion, whereby said second portion prevents formation of an interfacial oxide layer between said lead means and said first portion.
Claim 4
Dependent Claim
52 words
An electrical ceramic oxide capacitor comprising: a first electrode including a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide; a second electrode; and an electrical ceramic oxide dielectric material disposed between said first and said second electrodes.
Claim 5
Dependent Claim
52 words
An electrical ceramic oxide capacitor comprising: a first electrode including a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide; a second electrode; and an electrical ceramic oxide dielectric material disposed between said first and said second electrodes.
Claim 6
Dependent Claim
68 words
An electrical ceramic oxide capacitor as claimed in claim 3, wherein said first body is selected from the group consisting of ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide, and said first electrode further includes a second body of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium, said first body being disposed between said electrical ceramic oxide dielectric material and said second body.
Claim 7
Dependent Claim
39 words
An electrical ceramic oxide capacitor as claimed in claim 3, wherein said second electrode includes a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide.
Claim 8
Dependent Claim
79 words
An electrical ceramic oxide capacitor as claimed in claim 5, wherein the first body in each of said first and second electrodes is selected from the group consisting of ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide, and said first and second electrodes each further includes a second body of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium, said first body being disposed between said electrical ceramic oxide dielectric material and said second body.
Claim 9
Dependent Claim
53 words
An electrical ceramic oxide electro-optic device comprising: a first electrode including a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide; a second electrode; and an electrical ceramic oxide electo-optic material disposed between said first and said second electrodes.
Claim 10
Dependent Claim
53 words
An electrical ceramic oxide electro-optic device comprising: a first electrode including a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide; a second electrode; and an electrical ceramic oxide electo-optic material disposed between said first and said second electrodes.
Claim 11
Dependent Claim
69 words
An electrical ceramic oxide electro-optic device as claimed in claim 7, wherein said first body is selected from the group consisting of ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide, and said first electrode further includes a second body of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium, said first body being disposed between said electrical ceramic oxide electro-optic material and said second body.
Claim 12
Dependent Claim
40 words
An electrical ceramic oxide electro-optic device as claimed in claim 7, wherein said second electrode includes a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide.
Claim 13
Dependent Claim
80 words
An electrical ceramic oxide electro-optic device as claimed in claim 9, wherein the first body in each of said first and second electrodes is selected from the group consisting of ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide, and said first and second electrodes each further includes a second body of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium, said first body being disposed between said electrical ceramic oxide electro-optic material and said second body.
Claim 14
Dependent Claim
53 words
An electrical ceramic oxide superconductor device comprising: a first electrode including a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide; a second electrode; and an electrical ceramic oxide superconductor material disposed between said first and said second electrodes.
Claim 15
Dependent Claim
53 words
An electrical ceramic oxide superconductor device comprising: a first electrode including a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide; a second electrode; and an electrical ceramic oxide superconductor material disposed between said first and said second electrodes.
Claim 16
Dependent Claim
69 words
An electrical ceramic oxide superconductor device as claimed in claim 11, wherein said first body is selected from the group consisting of ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide, and said first electrode further includes a second body of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium, said first body being disposed between said electrical ceramic oxide superconductor material and said second body.
Claim 17
Dependent Claim
40 words
An electrical ceramic oxide superconductor device as claimed in claim 11, wherein said second electrode includes a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide.
Claim 18
Dependent Claim
80 words
An electrical ceramic oxide superconductor device as claimed in claim 13, wherein the first body in each of said first and second electrodes is selected from the group consisting of ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide, and said first and second electrodes each further includes a second body of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium, said first body being disposed between said electrical ceramic oxide superconductor material and said second body.
Claim 19
Independent Claim
69 words
A method for forming an electrical contact to an electrical ceramic oxide material comprising: (a) providing an electrical ceramic oxide substrate; (b) providing an electrical conductive lead means; and (c) forming an electrical connection between said substrate and said lead means, wherein said connection includes a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide.
Claim 20
Independent Claim
69 words
A method for forming an electrical contact to an electrical ceramic oxide material comprising: (a) providing an electrical ceramic oxide substrate; (b) providing an electrical conductive lead means; and (c) forming an electrical connection between said substrate and said lead means, wherein said connection includes a first body of material selected from the group consisting of ruthenium, iridium, osmium, rhodium, ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide.
Claim 21
Dependent Claim
63 words
The method of claim 15, wherein said first body of material is selected from the group consisting of ruthenium oxide, iridium oxide, osmium oxide, and rhodium oxide, and said electrical connection further includes a second body of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium, said second body disposed between said first body and said electrical conductive lead means.
Claim 22
Dependent Claim
50 words
The method of claim 16, wherein said second body is formed by deposition of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium, and said first body is formed by reactive deposition with oxygen of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium.
Claim 23
Dependent Claim
50 words
The method of claim 16, wherein said second body is formed by sputtering of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium, and said first body is formed by reactive sputtering with oxygen of material selected from the group consisting of ruthenium, iridium, osmium, and rhodium.
Claim 24
Dependent Claim
18 words
The method of claim 16, wherein said first body is formed by partial oxidation of said second body.
Claim 25
Dependent Claim
18 words
The method of claim 16, wherein said second body is formed by partial reduction of said first body.
References Cited (Backward Citations)
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