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Magnetic field visual sensor based on magnetoelectric-electrochromic effect

An electrochromic device and electrochromic technology, applied in the field of sensors, can solve the problems of non-observability and complicated signal acquisition, and achieve the effects of large range, low cost and high sensitivity

Inactive Publication Date: 2019-10-11
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Previously reported magnetic field sensors based on magnetoelectric heterojunction materials usually use electrical instruments to read magnetic field signals, and the signal acquisition is cumbersome and not observable.

Method used

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Embodiment 1

[0039] A magnetic field visualization sensor based on the magnetoelectric-electrochromic effect, including three parts: a magnetoelectric heterojunction device 1, a rectifier 2 and an electrochromic device 3, wherein the upper electrode 4 and the lower electrode 6 of the magnetoelectric heterojunction 1 It is connected to the AC input terminal of the rectifier 2, the positive terminal of the DC output terminal of the rectifier 2 is connected to the transparent anode electrode 10 of the electrochromic device 3, and the negative terminal of the rectifier 2 is connected to the transparent cathode electrode 13 of the electrochromic device 3, forming a complete circuit.

[0040] Described magnetoelectric heterojunction device 1 is made of Metglas magnetostrictive alloy, Pb (Mg 2 / 3 Nb 1 / 3 )O 3 -PbTiO 3 The piezoelectric single crystal is composed of three layers of Metglas magnetostrictive alloy on the upper and lower sides of the piezoelectric single crystal with epoxy resin.

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Embodiment 2

[0044] A magnetic field visualization sensor based on the magnetoelectric-electrochromic effect, including three parts: a magnetoelectric heterojunction device 1, a rectifier 2 and an electrochromic device 3, wherein the piezoelectric layer 5 of the magnetoelectric heterojunction 1-PZT voltage The interdigitated electrode 8 of the electric film is connected to the AC input terminal of the rectifier 2, the positive terminal of the DC output terminal of the rectifier 2 is connected to the transparent anode electrode 10 of the electrochromic device 3, and the negative terminal of the rectifier 2 is connected to the transparent electrode of the electrochromic device 3. The cathode electrode 13 is connected to form a complete circuit.

[0045] The preparation steps of the magnetoelectric heterojunction device 1 are as follows: 1. Using the sol-gel method to prepare a PZT piezoelectric film with a thickness of ~3 μm on a rigid mica substrate; 2. Using magnetron sputtering to form a P...

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Abstract

The invention belongs to the field of the sensor, especially a magnetic field visual sensor based on a magnetoelectric-electrochromic effect. The magnetic field visual sensor comprises a magnetoelectric heterojunction device, a rectifier and an electrochromic device; the magnetoelectric heterojunction device is connected with an AC input end of the rectifier, a positive port of a DC output end ofthe rectifier is in electrode connection with a transparent anode of the electrochromic device, and a negative port of the rectifier is in electrode connection of the transparent cathode of the electrochromic device, thereby forming an integer circuit. The magnetic field visual sensor proposed by the invention prepares the magnetic field sensor by using a magneto-electric heterojunction device, since the magneto-electric heterojunction device has the advantages of being low in cost, high in sensitivity, small in volume, and low in power consumption, the magnetic sensor with high sensitivity, miniaturization, wide temperature range, low power consumption, wide frequency band, large range, low cost and obvious comprehensive advantages can be prepared; and an electric signal is collected by using the electrochromic device, the signal can be directly converted into direct color response, thereby realizing the visualization of the magnetic field signal.

Description

technical field [0001] The invention belongs to the field of sensors, in particular to a magnetic field visualization sensor based on the magnetoelectric-electrochromic effect. Background technique [0002] A magnetic field sensor is a device that can convert various magnetic fields and their changes into electrical signal output, and detect, collect, store, convert, reproduce and monitor various magnetic fields and various information carried in the magnetic field. At present, people have developed magnetic field sensors with various physical, chemical and biological effects, and these sensors have been widely used in various aspects of scientific research, production and social life, and undertake the task of exploring various information. my country is a big producer and consumer of magneto-sensitive components and magnetic field sensors, but currently it is dominated by mid-to-low-end products such as magneto-sensitive diodes, with low added value. In contrast, high-end...

Claims

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Application Information

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IPC IPC(8): G01R33/032G02F1/155G02F1/163G02F1/153G02F1/1516G02F1/1524
CPCG01R33/0327G02F1/153G02F1/155G02F1/163G02F1/1516G02F1/1524
Inventor 汪尧进杨娜娜陈轩汪洋吴瀚舟王书豪
Owner NANJING UNIV OF SCI & TECH
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