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首页> 外文期刊>Digest Journal of Nanomaterials and Biostructures >INFLUENCE OFSm 2 O 3 ADDITION ON DIELECTRIC PROPERTIESOFBaTi 0.95 Sn 0.05 O 3 CERAMICS
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INFLUENCE OFSm 2 O 3 ADDITION ON DIELECTRIC PROPERTIESOFBaTi 0.95 Sn 0.05 O 3 CERAMICS

机译：Sm 2 O 3的添加对BaTi 0.95 Sn 0.05 O 3陶瓷介电性能的影响

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摘要

Ceramic samples of BaTi0.95 Sn 0.05 O 3 (BTS) were preparedby the conventional solid stateme thod and the influence of different dopingamounts of Sm 2 O 3 addition onphasecomposition, microstructure and dielectric properties of BTS c eramic s wereinvestigated. From the XRD patterns, the results showthat all samples exhibited pureperovskite phase with no impurity phase which suggestedthat Sm 3+ can be dissolved in theBTS to form a uniform solid solution. A small amount of doped Sm 2 O 3 can refine grains toa certain extent and improve the density of the ceramic body, which is beneficial toimprove the dielectric properties of the samples. In asmall amount of doping, Sm 3+ firstenters the A site of the BTS ceramic toreplace Ba 2+2+, causing l attice distortion due tointernal stress andincreasing the dielectric constant. The samples have the highest dielectricconstant (ε = 3508) and the lowe r dielectric loss (tanδ =0.018) at a sintering temperature of1330℃ with 0.4mol% Sm 3+ doping, showing exc ellent dielectric properties.Appropriateamount of doped Sm 2 O 3 alsohas a certain peak lift, so that the dielectric peak of ceramicsamplesincreased, but the Curie peak shift is not obvious.
机译：采用传统的固态方法制备了BaTi0.95 Sn 0.05 O 3（BTS）陶瓷样品，研究了不同掺杂量的Sm 2 O 3添加对BTS c蠕变相的组成，微观结构和介电性能的影响。从XRD图谱可知，所有样品均表现为纯钙钛矿相，无杂质相，表明Sm 3+可以溶解在BTS中，形成均匀的固溶体。少量掺杂的Sm 2 O 3可以在一定程度上细化晶粒，提高陶瓷体的密度，有利于提高样品的介电性能。在少量掺杂中，Sm 3+首先进入BTS陶瓷的A位置来代替Ba 2 + 2 +，由于内应力而导致晶格畸变并增加介电常数。样品在1330℃的烧结温度下具有0.4mol％的Sm 3+掺杂，具有最高的介电常数（ε= 3508）和较低的介电损耗（tanδ= 0.018），表现出优异的介电性能。也有一定的峰抬升，使陶瓷样品的介电峰增加，但居里峰移动不明显。

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