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A method for measuring curved lanthanum strontium manganese oxide electron concentration based on terahertz waves

A technology of lanthanum strontium manganese oxide and electron concentration, which is applied in the field of photoelectric detection, can solve the problems of inconvenient rapid detection and complicated detection methods, and achieve the effect of convenient detection, good effect and simple operation

Active Publication Date: 2021-11-30
HUANGHUAI UNIV
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Problems solved by technology

[0003] Aiming at the problem that the current detection method of curved lanthanum strontium manganese oxide is relatively complicated and inconvenient for rapid detection, the present invention provides a method for measuring the electron concentration of curved lanthanum strontium manganese oxide based on terahertz waves

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  • A method for measuring curved lanthanum strontium manganese oxide electron concentration based on terahertz waves
  • A method for measuring curved lanthanum strontium manganese oxide electron concentration based on terahertz waves
  • A method for measuring curved lanthanum strontium manganese oxide electron concentration based on terahertz waves

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Embodiment 1

[0031] Example 1: A method for measuring the bending terahertz wave lanthanum strontium manganese based on the oxygen concentration of the electron, comprising the steps of:

[0032] (1) standard substrate is measured using an electromagnetic wave in the terahertz band, the standard substrate obtained terahertz time-domain transmission spectra; standard substrate terahertz time-domain transmission spectrum Fourier transform to obtain frequency standard substrate terahertz transmission spectrum; standard substrate is mica.

[0033] (2) the use of electromagnetic waves in the terahertz band measurement sample to be tested, the test sample obtained terahertz time-domain transmission spectra; sample to be tested terahertz time-domain transmission spectrum Fourier transform to obtain frequency domain samples to be tested THz transmission spectra.

[0034] (3) a substrate according to the standard transmission spectrum frequency-domain terahertz and frequency-domain terahertz sample tra...

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Abstract

The invention discloses a method for measuring the electron concentration of curved lanthanum strontium manganese oxide based on terahertz waves. Electromagnetic waves in the terahertz frequency range are used to test the standard substrate and the lanthanum strontium manganese oxide sample respectively to obtain the time of the two. domain terahertz transmission spectrum; the two terahertz transmission spectra were Fourier transformed to obtain the standard substrate frequency domain terahertz transmission spectrum. According to the frequency-domain terahertz transmission spectrum of the standard substrate and the frequency-domain terahertz transmission spectrum of the sample, the photoconductivity of the sample to be tested in the terahertz frequency band is calculated, and the conductivity of the curved lanthanum strontium manganese oxide can be further estimated according to the Drude-Smith conductance formula The ratio of electron concentration to effective mass, electron relaxation time, and electron localization information. Electromagnetic waves in the terahertz frequency band have strong penetration, no contact, no need to prepare electrodes, simple operation, non-destructive to the sample to be tested, and better detection effect of bent lanthanum strontium manganese oxide.

Description

Technical field [0001] The present invention relates to a photoelectric detection technology, and in particular relates to a terahertz wave measurement based on lanthanum strontium manganese oxide curved electron concentration method. Background technique [0002] In recent years, electronic products, light, thin, flexible wearable increasing demand, some electronic products, flexible bendable, foldable, etc. become equally important and performance requirements. Perovskite oxide thin film having a wealth of physical properties such as: good electrical conductivity, ferroelectricity, piezoelectric characteristics, photoresponse, nonlinear optical properties, and the like giant magnetoresistive effect. Lanthanum strontium manganese oxide represented by a thin film having a perovskite preparation of mature and compatible with the advantages of large scale integrated circuit technology. In this present study, we prepared a flexible skin material and the electron terahertz optical ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3581
CPCG01N21/3581
Inventor 梅红樱徐文姚汝贤陈富军郑新艳姚海子
Owner HUANGHUAI UNIV
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