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Peculiar Five-fold Coordinated Sites Observed in the Oxides with Derivative Structure

机译:在具有衍生结构的氧化物中观察到的特殊五折协调位点

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摘要

In the oxides with derivative structure of perovskite,peculier five-fold coordinated sites occur at the boundary regionsbetween the fundamental structure units. The five-fold coordinatedtrigonal bipyramidal sites with large distortion have the muchlonger mean bond distances than those expected from the effectiveionic radius and the distances are similar to those of octahedral site.The bond valence calculation for those sites yields significantlower-valences than the expected values due to the longer bond distances.
机译:在钙钛矿衍生物结构的氧化物中,Peculier五折协调位点发生在基本结构单元的边界区域。 具有大畸变的五折协调有关的双脉络位点具有比有效半径的预期的更大的平均粘合距离,并且距离类似于八面体部位的距离。这些部位的键合价计算比到期的预期值产生显着的价值 到更长的债券距离。

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