tetragonal crystal

According to third order perturbation theory, the ZFS parameters for d 3 ions in tetragonal symmetry crystal field have been investigated.

利用Macfarlane的三阶微扰理论，研究了d3离子ZFS参量随四角晶场的变化。

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Their dielectric properties are in accordance with those of the crystal in tetragonal structure. ( 5 refs.)

采用LCRMETER4225型仪器测量其电性能，测得的介电性能在测试温度范围内具有弥散性相变的特性，这与四方晶系的晶体结构是相符的。

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First Principles Calculation of Electronic Structure and Elastic Constants of Tetragonal HfO_2 Crystal

四方晶相HfO2电子结构和弹性常数的第一性原理计算

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Study of ZFS parameters for d~ 3 ions in tetragonal symmetry crystal field

四角对称晶场中d~3离子ZFS参量的研究

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Theoretical Investigations on Zero-Field Splitting of 3d~ 3 Ions in Tetragonal Symmetry Crystal Field

四角仙人掌的协调性四角对称晶场中3d~3离子零场分裂理论研究

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Crystal Tube of Tetragonal Prism of New Inorganic Compound

具有独立形状的新无机化合物四方棱柱晶质管

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Calculation of the Elastic Constants for the Tetragonal Zirconia Crystal

四方相二氧化锆晶体的弹性系数计算

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The results of XRD and SEM show that the main crystal phase is the non-full-filled tetragonal tungsten bronze structure.

SEM结构分析可知，主晶相为非填满型钨青铜结构四方晶相。

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Addition of CaF 2 will result in the crystal of C 4A 3S existing in tetragonal structure mainly.

CaF2的存在使C4A3S矿物晶体主要以四方晶系的结构形式存在；

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The results of MAS NMR illustrate that the phase change process and the elongation of tetragonal crystal c axis are due to the variation of aluminium ion distribution within the lattice.

MAS NMR结果表明，上述相变过程及四方形晶体c轴逐渐加长的情况，应归因于晶格内部铝离子位置分布的变化。

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The incorporation of metal oxide had directional induction for the formation of the crystal phase of ZrO 2, and results in the remarkable increase of the content of the tetragonal crystal phase of ZrO 2 as well as the activity and stability of catalysts.

金属氧化物的引入对ZrO2晶型的形成有定向诱导作用，使样品中四方相ZrO2的含量明显增加，催化剂的活性及稳定性增强；

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