Constant current: A method for obtaining hysteresis loops in ferroelectric materials

被引：16

作者：

Giacometti, JA

Wisniewski, C

Moura, WA

Ribeiro, PA

机构：

[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[2] Escola TEcn Fed Mato Grosso, Cuiaba, MT, Brazil

[3] Univ Nova Lisboa, Fac Ciencias & Tecnol, Monte De Caparica, Portugal

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1999年 / 70卷 / 06期

关键词：

D O I：

10.1063/1.1149830

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A new method is proposed to obtain hysteresis loops in ferroelectric materials in which the sample is submitted to a constant electric current. This technique was applied on poly(vinylidene fluoride), PVDF, biaxially stretched samples and the hysteresis loops of the electric displacement and electric polarization versus the electric field compared well with those obtained with the Sawyer-Tower method. The constant current method is advantageous in that no measuring amplifiers are needed and it is insensitive to prebreakdown noise. (C) 1999 American Institute of Physics. [S0034-6748(99)04806-6].

引用

页码：2699 / 2702

页数：4

共 12 条

[1]

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[2] PVF2 POLYMERS - FERROELECTRIC POLARIZATION AND PIEZOELECTRIC PROPERTIES UNDER DYNAMIC PRESSURE AND SHOCK-WAVE ACTION [J].