Unlock instant, AI-driven research and patent intelligence for your innovation.

Device and method for high-throughput screening of magnetic conductivity of soft magnetic material

A technology of soft magnetic materials and magnetic permeability, applied in the direction of permeability measurement, magnetic performance measurement, etc., can solve the problems of complex operation and analysis, and the inability to use high throughput, and achieve simple sample preparation requirements, simple structure, and high measurement frequency wide range of effects

Pending Publication Date: 2022-05-06
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resonant cavity method can only be used for point frequency measurement. To measure multiple frequency points, multiple different cavities must be fabricated, and the operation and analysis are relatively complicated, so it cannot be used for high-throughput

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for high-throughput screening of magnetic conductivity of soft magnetic material
  • Device and method for high-throughput screening of magnetic conductivity of soft magnetic material
  • Device and method for high-throughput screening of magnetic conductivity of soft magnetic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Embodiment 1: with figure 1 and figure 2 A high-throughput screening device for the permeability of soft magnetic materials is shown to measure two kinds of ferrites with different permeability,

[0073] The capacitance of the first capacitor 12 in the resonant circuit of the test probe 1 is 1-10PF, the capacitance of the second capacitor 13 is 1-10PF, and the inductance coil 11 is a copper wire with a length of 5mm and a diameter of 1mm;

[0074] By adjusting the first capacitor 12 and the second capacitor 13, the resonance point of the circuit reaches (767MHz, -13.78dB), and two kinds of ferrite sheets with different magnetic permeability are placed on the three-dimensional mobile platform to adjust the three-dimensional mobile platform The positions of the two ferrite sheets pass through the test probe 1 in turn, and the resonant frequency and reflection parameters of the resonant circuit when the two kinds of ferrite sheets pass through the test probe 1 are measur...

Embodiment 2

[0075] Embodiment 2: with figure 1 and figure 2 A high-throughput screening device for the permeability of soft magnetic materials is shown to measure the FeCoB gradient film prepared by magnetron sputtering. The Fe content distribution of the gradient film is as follows Figure 4 shown;

[0076] The capacitance of the first capacitor 12 used in the test probe 1 resonant circuit is 3-10PF, the capacitance of the second capacitor 13 is 3-10PF, and the inductance coil 11 is a 4-turn circular planar coil; the wire width is 0.5mm, and the spacing 0.2mm, inner diameter 2mm, the measured inductance of the planar coil is 0.25uH. According to the formula, the resonant frequency range of the resonant circuit is f=86.5MHz-159MHz.

[0077] The resonant circuit is simulated with electromagnetic simulation software, and the relationship between the resonant frequency and the magnetic permeability is obtained as follows: Figure 5 As shown, the specific quantitative relationship is:

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a device and a method for high-throughput screening of magnetic conductivity of a soft magnetic material. The device for high-throughput screening of the magnetic conductivity of the soft magnetic material comprises a test probe, the test probe comprises a resonance circuit, and the resonance frequency and reflection parameters of the resonance circuit can be influenced by a sample to be tested to change; the vector network analyzer is electrically connected with the test probe and is used for measuring the resonant frequency and reflection parameters of the resonant circuit; the data processing mechanism is at least used for processing the received multiple groups of resonant frequencies and reflection parameters and obtaining the magnetic conductivity of the sample to be detected; and the three-dimensional mobile platform is at least used for placing a to-be-tested sample, moving the to-be-tested sample to a specified test position in a specified posture, and measuring the distance between the to-be-tested sample and the test probe at the same time. According to the invention, high-throughput real-time measurement of the sample to be detected can be realized, continuous, nondestructive and rapid detection of a plurality of samples can be realized, and high resolution and sensitivity are achieved.

Description

technical field [0001] The invention relates to a magnetic permeability testing device, in particular to a high-throughput screening device and method for the magnetic permeability of soft magnetic materials, belonging to the technical field of testing equipment. Background technique [0002] Due to its small size and high frequency response, magnetic thin film materials are widely used in information storage, electromagnetic compatibility, magnetic sensors and microwave communications. Magnetic permeability is one of the important technical indicators of magnetic thin film materials, and it is very critical for the design and development of high-performance magnetic devices. Effective detection based on magnetic permeability is directly related to product performance, cost, service life, and even product safety. Therefore, it is of great significance to measure magnetic permeability accurately and reliably. [0003] At present, the methods for measuring the magnetic perme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/12
CPCG01R33/1223
Inventor 姚冰楠王军强许巍陈霄李傲
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI