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Clamp for measuring ferroelectric hysteresis loop made of ferroelectric materials under isostatic pressing

A ferroelectric material and hysteresis loop technology, which is applied in the measurement of electrical variables, parts of electrical measuring instruments, measuring devices, etc. Suitable for popularization, easy assembly and low cost

Active Publication Date: 2017-11-28
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] High-performance ferroelectric materials are a class of functional materials with broad application prospects. Judging from the current research status, the research, development and application of high-performance ferroelectric materials are still in the development stage. Researchers choose different ferroelectric materials. Conduct research on ferroelectric materials and continue to carry out research on their properties, but so far the research on some properties of ferroelectric materials has not reached a satisfactory level

Method used

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  • Clamp for measuring ferroelectric hysteresis loop made of ferroelectric materials under isostatic pressing
  • Clamp for measuring ferroelectric hysteresis loop made of ferroelectric materials under isostatic pressing
  • Clamp for measuring ferroelectric hysteresis loop made of ferroelectric materials under isostatic pressing

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Experimental program
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Embodiment 1）

[0073] It is known that the parameters of the BNT ferroelectric ceramic sample are as follows: the effective electrode area of ​​the sample is 50.26mm 2 , thickness 0.5mm. Additionally, the steel columns are 17-4PH steel.

[0074] Now connect one end of the measurement fixture 100 according to the above-mentioned embodiment to the above-mentioned BNT ferroelectric ceramic sample, place it in the test cylinder (not limited to the model) of the isostatic press, and connect the other end to the electric sample of aixACCT TF Analyzer 2000. Hysteresis line meter connection.

[0075] After the above connection is completed, adjust the pressure of the test cylinder of the isostatic press, for example, measure the hysteresis loop of the above-mentioned BNT ferroelectric ceramic sample under the isostatic pressure of 0, 100Mpa, 200MPa, 300MPa, and 400MPa. The test results are as follows: image 3 shown.

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Abstract

The invention provides a clamp for measuring a ferroelectric hysteresis loop made of ferroelectric materials under isostatic pressing. The clamp comprises a support equipped with a pair of hollow parts, a pair of clamp main bodies (1A, 1B) which are respectively installed in the hollow parts, and a top cover (4) which covers the clamp main body (1A, 1B) and is fixed on the upper part of the support. Each clamp main bodies (1A, 1B) comprises a conductive bar (11) and a steel column (2) which are connected with each other in upper and lower directions and electrically conducted with each other. Free ends of the conductive bars (11) stretch out of the top cover (4), so first ports (11a) connected with a ferroelectric hysteresis loop measurement meter are formed. Second ports connected with to-be-measured ferroelectric materials are formed in free ends of the steel columns (12). The conductive bars and the steel columns are insulated with the support. According to the invention, research on principles of phase transition of the materials and deepening of understanding of the principles of phase transition are facilitated; actual electrical performance of the materials in the outer field can be acquired; and in addition, the clamp is simple in structure, low in cost and suitable for popularization.

Description

technical field [0001] The invention belongs to the technical field of measuring electrical performance parameters of ferroelectric materials, and in particular relates to the measurement of hysteresis loops of ferroelectric materials, in particular to a fixture for measuring hysteresis loops of ferroelectric materials under isostatic pressure. Background technique [0002] High-performance ferroelectric materials are a class of functional materials with broad application prospects. Judging from the current research status, the research, development and application of high-performance ferroelectric materials are still in the development stage. Researchers choose different ferroelectric materials. Ferroelectric materials are being studied and their properties are being studied continuously, but the research on some properties of ferroelectric materials has not reached a satisfactory level so far. [0003] Ferroelectric materials refer to a class of materials with ferroelectri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/04
CPCG01R1/0416G01R1/0425
Inventor 曹菲陈建和王根水董显林
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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