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1·Multiferroic materials possess both magnetism and ferroelectricity, or a permanent electric polarization.

多铁性材料兼具磁性和铁电性，或者可以说成是永久电力极化特性。

2·With decreasing grain sizes, its crystal structure, ferroelectricity and phase transition temperature all indicated the character of size effect.

随着晶粒尺寸的减小，它的晶体结构、铁电性和相变温度等都表现出尺寸效应。

3·The ultrathin materials which show ferroelectricity and the thickness of which is from several ten nanometers to a few microns are called ferroelectric thin film.

具有铁电性且厚度尺寸为数十纳米到数微米的膜材料叫铁电薄膜。

4·The transition from the clamped state to the free state of the perovskite-type phase, and its effect on ferroelectricity of the samples are emphasized in the discussion.

本文还着重讨论了钙钛矿型晶相由“受夹”态到“自由”态的转变及其对样品铁电性的影响。

5·Lead titanate series materials present excellent piezoelectricity, ferroelectricity and pyroelectric performance, and have been widely used in intelligent material system.

钛酸铅系材料具有优异的压电、铁电和热释电性能，是智能材料系统中的主导材料。

6·The ferroelectricity means the spontaneous polarization that exists in some materials, and the spontaneous polarization can change its direction when the external electric field alters.

铁电性是指某些物质存在自发电极化现象，并且自发极化矢量取向能随着外电场而改变。

7·Magnetic relaxor ferroelectric materials (MRF) are compounds in which the relaxor ferroelectricity and ferromagnetic (antiferromagnetic) order coexist simultaneously in certain temperature range.

磁性弛豫铁电材料是指在一定温度范围内同时具有弛豫铁电性和铁磁(反铁磁)序的材料。