# US 4,392,992 A · Chromium-silicon-nitrogen resistor material

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- Number: US 4,392,992 A
- Document ID: US4392992A
- Status: Granted
- Kind: A
- Application number: 06/279,130
- Filed: 1981-06-30
- Granted: 1983-07-12
- Earliest claimed: 1981-06-30
- Assignees: Motorola, Inc.
- Inventors: Wayne M. Paulson; David W. Hughes
- Web page: https://patentgrep.com/patent/US4392992A

## CPC

- H01C 7/006: {Thin film resistors}
- H01C 17/12: by sputtering
- Y10T 29/49099: Coating resistive material on a base
- H01C: RESISTORS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Improved thin film resistors and electrical devices and circuits with thin film resistors are fabricated utilizing a chromium, silicon, and nitrogen compound formed preferably by rf reactive sputtering of chromium and silicon in a nitrogen bearing atmosphere. An annealing step is used to produce time-stable resistance values and in combination with variations in the partial pressure of nitrogen during sputter deposition to control the temperature coefficient of resistivity to have positive, negative or zero values.

## Claims

### Claim 1

A resistor material comprising Cr, Si, and nitrogen in atomic percent proportions in the range 5% to 75% Cr, 5% to 85% Si, and 1% to 60% nitrogen.

### Claim 2

A resistor material comprising Cr, Si, and nitrogen in atomic percent proportions in the range 15% to 35% Cr, 47% to 83% Si, and 2% to 18% nitrogen.

### Claim 3

A resistor material comprising Cr, Si, and nitrogen in atomic percent proportions in the range 25% to 29% Cr, 55% to 67% Si, and 8% to 16% nitrogen.