TY - GEN
T1 - Hybrid Magnetic Sensor Combined with a Magnetic Resistive Sensor and High-Temperature Superconducting Magnetic-Focusing Plates
AU - Tsukada, K.
AU - Hirata, T.
AU - Nakamura, Y.
AU - Majima, Y.
AU - Amano, K.
AU - Sakai, K.
AU - Toshihiko, T.
N1 - Funding Information:
ACKNOWLEDGMENT This work was supported by the Council for Science, Technology and Innovation and Cross-ministerial Strategic Innovation Promotion Program (SIP), Infrastructure Maintenance, Renovation, and Management (funding agency: JST)
Publisher Copyright:
© 2017 IEEE.
PY - 2018/3/9
Y1 - 2018/3/9
N2 - Magnetic resistive (MR) sensors are widely used; particularly, in consumer products. On the contrary, superconducting quantum interference devices (SQUIDs) are mainly utilized in applications requiring extremely sensitive magnetic sensors. In this study, we developed a hybrid magnetic sensor by combining an MR sensor with two high-temperature superconducting (HTS) plate to achieve the sensitivity that lies half way between the individual sensitivities of the hybrids' component sensors. Two types of magnetic sensors such as an anisotropic MR sensor (AMR) and a nanogranular in-gap tunnel MR sensor (TMR) were separately combined with the HTS plates; next, their magnetic response characteristics were compared. The AMR sensor exhibited lower sensitivity in liquid nitrogen environment, owing to the decreasing effect of temperature on resistivity. The TMR sensor exhibited higher sensitivity, owing to the temperature dependence of the tunneling mechanism. By using the magnetic-focusing characteristic of the HTS plates (manufactured using YBCO) and the slit between the two plates, the sensitivity of both the sensors increased when they were combined with the HTS plates. The adjustment of parameters such as the liftoff between MR sensors, slit of the HTS plates, and plate size allowed for the sensitivity to be controlled, depending on the application.
AB - Magnetic resistive (MR) sensors are widely used; particularly, in consumer products. On the contrary, superconducting quantum interference devices (SQUIDs) are mainly utilized in applications requiring extremely sensitive magnetic sensors. In this study, we developed a hybrid magnetic sensor by combining an MR sensor with two high-temperature superconducting (HTS) plate to achieve the sensitivity that lies half way between the individual sensitivities of the hybrids' component sensors. Two types of magnetic sensors such as an anisotropic MR sensor (AMR) and a nanogranular in-gap tunnel MR sensor (TMR) were separately combined with the HTS plates; next, their magnetic response characteristics were compared. The AMR sensor exhibited lower sensitivity in liquid nitrogen environment, owing to the decreasing effect of temperature on resistivity. The TMR sensor exhibited higher sensitivity, owing to the temperature dependence of the tunneling mechanism. By using the magnetic-focusing characteristic of the HTS plates (manufactured using YBCO) and the slit between the two plates, the sensitivity of both the sensors increased when they were combined with the HTS plates. The adjustment of parameters such as the liftoff between MR sensors, slit of the HTS plates, and plate size allowed for the sensitivity to be controlled, depending on the application.
KW - high temperature superconducing plate
KW - magnetic resistive sensor
KW - magnetic sensitivity
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U2 - 10.1109/ISEC.2017.8314197
DO - 10.1109/ISEC.2017.8314197
M3 - Conference contribution
AN - SCOPUS:85046960872
T3 - 2017 16th International Superconductive Electronics Conference, ISEC 2017
SP - 1
EP - 2
BT - 2017 16th International Superconductive Electronics Conference, ISEC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 16th International Superconductive Electronics Conference, ISEC 2017
Y2 - 12 June 2017 through 16 June 2017
ER -