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Structure and Magnetic Behavior of Layered Honeycomb Tellurates, BiM(III)TeO6 (M = Cr, Mn, Fe)
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2016-09-27 00:00:00 , DOI: 10.1021/acs.inorgchem.6b01472 Sun Woo Kim 1 , Zheng Deng 1 , Zachary Fischer 1 , Saul H. Lapidus 2 , Peter W. Stephens 3 , Man-Rong Li 1 , Martha Greenblatt 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2016-09-27 00:00:00 , DOI: 10.1021/acs.inorgchem.6b01472 Sun Woo Kim 1 , Zheng Deng 1 , Zachary Fischer 1 , Saul H. Lapidus 2 , Peter W. Stephens 3 , Man-Rong Li 1 , Martha Greenblatt 1
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New layered honeycomb tellurates, BiM(III)TeO6 (M = Cr, Mn, Fe) were synthesized and characterized. BiM(III)TeO6 (M = Cr, Fe) species crystallize in a trigonal space group, P3̅1c (No. 163), of edge-sharing M3+/Te6+O6 octahedra, which form honeycomb-like double layers in the ab plane with Bi3+ cations located between the layers. Interestingly, the structure of BiMnTeO6 is similar to those of the Cr/Fe analogues, but with monoclinic space group, P21/c (No. 14), attributed to the strong Jahn–Teller distortion of Mn3+ cations. The crystal structure of BiM(III)TeO6 is a superstructure of PbSb2O6-related materials (ABB′O6). The Cr3+ and Fe3+ cations are ordered 80% and 90%, respectively, while the Mn3+ ions are completely ordered on the B-site of the ABB′O6 structure. BiCrTeO6 shows a broad antiferromagnetic transition (AFM) at ∼17 K with a Weiss temperature (θ) of −59.85 K, while BiFeTeO6 and BiMnTeO6 show sharp AFM transitions at ∼11 K with θ of −27.56 K and at ∼9.5 K with θ of −17.57 K, respectively. These differences in the magnetic behavior are ascribed to the different concentration of magnetic nearest versus next-nearest neighbor interactions of magnetic cations due to the relative differences in the extent of M/Te ordering.
中文翻译：
层状蜂窝状碲酸盐BiM（III）TeO 6（M = Cr，Mn，Fe）的结构和磁行为
合成并表征了新的层状蜂窝状碲酸盐BiM（III）TeO 6（M = Cr，Mn，Fe）。的BiM（III）的TeO 6（M =铬，铁）物种结晶在三角空间群，P 31 Ç（第163号），的边缘共享中号3+ /碲6+ ø 6八面体，其形式蜂窝状ab平面中的双分子层，且Bi 3+阳离子位于两层之间。有趣的是，BiMnTeO 6的结构与Cr / Fe类似物的结构相似，但具有单斜向空间群P 2 1 / c（第14号）归因于Mn 3+阳离子的强Jahn-Teller变形。BiM（III）TeO 6的晶体结构是与PbSb 2 O 6相关的材料（ABB'O 6）的上层结构。Cr 3+和Fe 3+阳离子分别有序为80％和90％，而Mn 3+离子则完全在ABB'O 6结构的B位上有序。BiCrTeO 6在〜17 K处显示宽反铁磁跃迁（AFM），魏斯温度（θ）为−59.85 K，而BiFeTeO 6和BiMnTeO 6分别在〜11 K和θ为−17.57 K的情况下分别在〜11 K和〜9.5 K处出现急剧的AFM跃迁。磁行为的这些差异归因于由于M / Te有序程度的相对差异而导致的磁性阳离子的最近磁性相互作用与下一最近邻磁性相互作用的浓度不同。
更新日期：2016-09-27
中文翻译：
层状蜂窝状碲酸盐BiM（III）TeO 6（M = Cr，Mn，Fe）的结构和磁行为
合成并表征了新的层状蜂窝状碲酸盐BiM（III）TeO 6（M = Cr，Mn，Fe）。的BiM（III）的TeO 6（M =铬，铁）物种结晶在三角空间群，P 31 Ç（第163号），的边缘共享中号3+ /碲6+ ø 6八面体，其形式蜂窝状ab平面中的双分子层，且Bi 3+阳离子位于两层之间。有趣的是，BiMnTeO 6的结构与Cr / Fe类似物的结构相似，但具有单斜向空间群P 2 1 / c（第14号）归因于Mn 3+阳离子的强Jahn-Teller变形。BiM（III）TeO 6的晶体结构是与PbSb 2 O 6相关的材料（ABB'O 6）的上层结构。Cr 3+和Fe 3+阳离子分别有序为80％和90％，而Mn 3+离子则完全在ABB'O 6结构的B位上有序。BiCrTeO 6在〜17 K处显示宽反铁磁跃迁（AFM），魏斯温度（θ）为−59.85 K，而BiFeTeO 6和BiMnTeO 6分别在〜11 K和θ为−17.57 K的情况下分别在〜11 K和〜9.5 K处出现急剧的AFM跃迁。磁行为的这些差异归因于由于M / Te有序程度的相对差异而导致的磁性阳离子的最近磁性相互作用与下一最近邻磁性相互作用的浓度不同。
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