Abstract
A highly sensitive magnetic sensing method using magnetoresistance devices is proposed. An InSb magnetic sensing device was used in the feedback loop of a Hartley oscillator. The oscillation starts when the resistance of the InSb magnetic sensing device changes in the external magnetic field as the oscillation condition is fulfilled. We can detect the magnetic 1 or 0 signal, corresponding to oscillation or nonoscillation, respectively. Output response and error rate in our magnetic sensing for the detection of oscillation were invesitigated. As a result, a high output response of 1 Vpp was obtained even if the electric sensing current which flows into the InSb magnetic sensing device was 450 μA. The resistance change of more than 30 Ω is required in order to maintain an error rate of less than 10-5. Therefore, this magnetic sensing method has potential application in highly sensitive magnetic sensors.
| Original language | English |
|---|---|
| Pages (from-to) | 5600-5603 |
| Number of pages | 4 |
| Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
| Volume | 43 |
| Issue number | 8 A |
| DOIs | |
| Publication status | Published - 2004 Aug 1 |
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Keywords
- Feedback loop
- Hartley oscillator
- Magnetic sensing method
- Magnetoresistance effect
- Sensing current
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Highly sensitive magnetic sensing method using magnetoresitance devices. / Kaiju, Hideo; Saisho, Kazuya; Shiiki, Kazuo.
In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 43, No. 8 A, 01.08.2004, p. 5600-5603.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Highly sensitive magnetic sensing method using magnetoresitance devices
AU - Kaiju, Hideo
AU - Saisho, Kazuya
AU - Shiiki, Kazuo
PY - 2004/8/1
Y1 - 2004/8/1
N2 - A highly sensitive magnetic sensing method using magnetoresistance devices is proposed. An InSb magnetic sensing device was used in the feedback loop of a Hartley oscillator. The oscillation starts when the resistance of the InSb magnetic sensing device changes in the external magnetic field as the oscillation condition is fulfilled. We can detect the magnetic 1 or 0 signal, corresponding to oscillation or nonoscillation, respectively. Output response and error rate in our magnetic sensing for the detection of oscillation were invesitigated. As a result, a high output response of 1 Vpp was obtained even if the electric sensing current which flows into the InSb magnetic sensing device was 450 μA. The resistance change of more than 30 Ω is required in order to maintain an error rate of less than 10-5. Therefore, this magnetic sensing method has potential application in highly sensitive magnetic sensors.
AB - A highly sensitive magnetic sensing method using magnetoresistance devices is proposed. An InSb magnetic sensing device was used in the feedback loop of a Hartley oscillator. The oscillation starts when the resistance of the InSb magnetic sensing device changes in the external magnetic field as the oscillation condition is fulfilled. We can detect the magnetic 1 or 0 signal, corresponding to oscillation or nonoscillation, respectively. Output response and error rate in our magnetic sensing for the detection of oscillation were invesitigated. As a result, a high output response of 1 Vpp was obtained even if the electric sensing current which flows into the InSb magnetic sensing device was 450 μA. The resistance change of more than 30 Ω is required in order to maintain an error rate of less than 10-5. Therefore, this magnetic sensing method has potential application in highly sensitive magnetic sensors.
KW - Feedback loop
KW - Hartley oscillator
KW - Magnetic sensing method
KW - Magnetoresistance effect
KW - Sensing current
UR - http://www.scopus.com/inward/record.url?scp=6344223309&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=6344223309&partnerID=8YFLogxK
U2 - 10.1143/JJAP.43.5600
DO - 10.1143/JJAP.43.5600
M3 - Article
AN - SCOPUS:6344223309
VL - 43
SP - 5600
EP - 5603
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 8 A
ER -