Magnetic nano temperature measurement method using triangle wave excitation magnetic field

US9534963B2 · kind B2 · utility

Assignee

• Huazhong University of Science and Technology · CN

Inventors

• Wenzhong Liu · 红钢城街道, CN
• Jing Zhong · Beijing, CN
• Ling Jiang · 红钢城街道, CN
• Ming Yang · 红钢城街道, CN
• Pu Zhang · Ann Arbor, US
• Ming Zhou · 红钢城街道, CN

Key dates

• Filing date: Dec 14, 2013
• Grant date: Jan 3, 2017
• Expiry date: May 14, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2562/0285
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Provided is a magnetic nano temperature measurement method under a triangle wave excitation magnetic field relating to a technical field of nano measurement. The method further comprises steps of: (1) positioning a magnetic nano sample at a measured object; (2) applying a triangle wave excitation magnetic field on area of the magnetic nano sample; (3) detecting a triangle wave excitation magnetic field-time curve and a magnetization-time curve of the magnetic nano sample; (4) obtaining a magnetizing curve of the magnetic nano sample, namely excitation magnetic field-magnetization curve, by the triangle wave excitation magnetic field curve and the magnetization curve, and sampling the magnetizing curve to obtain magnetization Mi of the magnetic nano sample under excitation magnetic field Hi; and (5) determining temperature of the measured object by curve fitting with excitation magnetic field Hi as input, magnetization Mi as output, and a relationship between the excitation magnetic field and the magnetization as objective function. The invention obtains a magnetizing curve rapidly using a triangle wave excitation magnetic field, and realizes real-time and precise temperature measur…