Organic molecular ferroelectric crystal di-n-butylamine difluoromonochloroacetate and its preparation method and use

A technology of di-n-butylamine difluoro-chloroacetate and n-butylamine difluoro-chloroacetate, applied to organic molecule ferroelectric crystal di-n-butylamine difluoro-chloroacetate, the ferroelectric crystal In the field of material preparation, it can solve the problems of low spontaneous polarization, poor material stability, and practical application limitations, and achieve the effects of low cost, mild reaction conditions, and simple reaction
CN106480506BActive Publication Date: 2019-02-01FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
Publication Date
2019-02-01

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Abstract

The invention relates to an organic molecular ferroelectric crystal di-n-butylamine difluoromonochloroacetate, a preparation method therefor and use of the organic molecular ferroelectric crystal di-n-butylamine difluoromonochloroacetate. Proven by tests on electric hysteresis loop of the organic molecular ferroelectric crystal material, i.e., di-n-butylamine difluoromonochloroacetate through a Sawyer-Tower circuit, the material shows good ferroelectric properties in a ferroelectric phase and has relatively high saturation polarization strength reaching 3.9[mu]c / cm<2> and moderate coercive field about 12.4kV / cm. Proven by variable temperature nonlinear tests, the material does not have obvious second-order nonlinear frequency-doubled signals in a paraelectric phase, obvious second-order nonlinear frequency-doubled signals appear when the temperature is cooled to Curie temperature (243K), the strength value of the nonlinear signals is saturated along with decrease of temperature, excellent nonlinear on / off performance is shown in an entire test temperature range, the on / off ratio reaches 28, and the repeatability is relatively good. The reaction is simple, and the conditions are moderate.
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Description

technical field

[0001] The invention relates to an organic molecular ferroelectric crystal di-n-butylamine difluoromonochloroacetate and its preparation method and use, belonging to the field of functional materials, in particular to the preparation and application of the ferroelectric crystal material. Background technique

[0002] Ferroelectric materials are a special class of polar materials, which have a spontaneous polarization effect inside, and the spontaneous polarization direction can be flipped or reoriented under the action of an external field (such as electric field, magnetic field, pressure, etc.), so that the polarization The intensity and the electric field show a hysteresis loop relationship. Based on this characteristic, ferroelectric materials exhibit some special optoelectronic functional properties, such as ferroelectric effect, nonlinear switching effect, pyroelectric effect, piezoelectric effect, electro-optic effect and photorefractive effect, etc. T...

Claims

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