The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2014
Filed:
Feb. 19, 2014
Magnetic write head characterization with nano-meter resolution using nitrogen vacancy color centers
Applicant:
Infinitum Solutions, Inc., Santa Clara, CA (US);
Inventor:
Juergen Heidmann, Salinas, CA (US);
Assignee:
Infinitum Solutions, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/33 (2006.01); G11B 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A crystal film with one or more nitrogen vacancy centers is placed in a magnetic field produced by a recording head and excitation illumination and a varying excitation field is applied. A confocal microscope or wide-field microscope optically detects a decrease in a spin dependent photoluminescence in response to the excitation illumination caused by electron spin resonance (ESR) of the at least one nitrogen vacancy center at varying excitation frequencies of the excitation field to measure Optically Detected Spin Resonance (ODMR). A characteristic of the recording head is determined using the ODMR.