Magnetic force microscopy method and apparatus to detect and image currents in integrated circuits
Patent
·
OSTI ID:131914
A magnetic force microscopy method and improved magnetic tip for detecting and quantifying internal magnetic fields resulting from current of integrated circuits are disclosed. Detection of the current is used for failure analysis, design verification, and model validation. The interaction of the current on the integrated chip with a magnetic field can be detected using a cantilevered magnetic tip. Enhanced sensitivity for both ac and dc current and voltage detection is achieved with voltage by an ac coupling or a heterodyne technique. The techniques can be used to extract information from analog circuits. 17 figs.
- Research Organization:
- AT&T Corporation; Sandia Corporation
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-76DP00789; AC04-94AL85000
- Assignee:
- SNL; SN: 95001485794; PA: EDB-95:157952; SCA: 440800; 426000
- Patent Number(s):
- US 5,465,046/A/
- Application Number:
- PAN: 8-215,431
- OSTI ID:
- 131914
- Country of Publication:
- United States
- Language:
- English
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