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Dielectric constant and Curie Temperature Measurement

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What is observed when the temperature of a ferroelectric ceramic exceeds its Curie temperature?

a: The material becomes superconductive Explanation

Explanation

b: The dielectric constant drops and the material becomes paraelectric Explanation

Explanation

c: The dielectric constant increases exponentially Explanation

Explanation

d: The material becomes magnetic Explanation

Explanation

How does the dielectric constant of a ferroelectric ceramic behave near the Curie temperature?

a: It remains constant Explanation

Explanation

b: It decreases sharply Explanation

Explanation

c: It peaks and then decreases as temperature continues to rise Explanation

Explanation

d: It oscillates periodically Explanation

Explanation

During the experiment, which factor most affects the measurement of the dielectric constant?

a: The color of the ceramic Explanation

Explanation

b: The applied frequency of the electric field Explanation

Explanation

c: The material’s magnetic properties Explanation

Explanation

d: The thickness of the ceramic Explanation

Explanation

Why is it important to precisely measure the Curie temperature of a ferroelectric material?

a: To determine its optical properties Explanation

Explanation

b: To improve its magnetic response Explanation

Explanation

c: To evaluate its tensile strength Explanation

Explanation

d: To identify the temperature at which the material’s ferroelectric properties cease Explanation

Explanation

What does the experiment reveal about the relationship between temperature and the dielectric constant of ferroelectric ceramics?

a: The dielectric constant first increases, peaks near the Curie temperature, and then decreases Explanation

Explanation

b: The dielectric constant decreases uniformly with temperature Explanation

Explanation

c: They are unrelated Explanation

Explanation

d: The dielectric constant increases linearly with temperature Explanation

Explanation

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