A new johnson-noise-based thermometry using giant magnetoresistive sensor

Abstract

This paper proposes a temperature measurement method using a giant magnetoresistive sensor as a sensing resistor based on Johnson noise thermometry. Experiments were performed to verify this approach. The results demonstrate the reliability of this approach with error less than 2.3% in the temperature range from 303 K to 423 K, which can enable a multifunctional spintronic sensor detecting temperature and magnetic field.