当前位置: X-MOL 学术Dalton Trans. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
High-pressure synthesis of A-site ordered perovskite PbMn3(CrMn3)O12 with long-range antiferromagnetic ordering and a spin glass transition
Dalton Transactions ( IF 4 ) Pub Date : 2024-05-15 , DOI: 10.1039/d4dt01357c
Man Xue 1 , Xiaohui Yan 1 , Deyang Xu 1 , Bin Zheng 1 , Wenbin Guo 1 , Xiaojun Kuang 1, 2 , Xiuyun Lei 1 , Congling Yin 1
Affiliation  

An AA′3B4O12-type perovskite oxide PbMn3(CrMn3)O12 was synthesized by high-pressure solid-state reactions at 8 GPa and 1373 K. Synchrotron X-ray diffraction shows a cubic crystal structure with the space group Im[3 with combining macron]. The charge states are verified by X-ray photoelectron spectroscopy to be PbMn3+3(Cr3+Mn3+2Mn4+)O12, where the Pb2+ and Mn3+ are 1 : 3 ordered respectively at A and A′ sites, while the Cr3+, Mn3+ and Mn4+ are disorderly distributed at the B site. PbMn3(CrMn3)O12 features a long-range antiferromagnetic order of A′-site Mn3+ spins at about 66 K and a subsequent spin glass transition around 36 K due to the randomly distributed Cr3+, Mn3+, and Mn4+ cations at the B site. This unique stepwise order of A′ and B-site spins indicates weak A′–B site spin interactions, which are dominated by the difference in the B-site Mn3+/Ni2+ and Mn4+ number in the quadruple perovskites AMn3B4O12.

中文翻译:


高压合成具有长程反铁磁有序性和自旋玻璃化转变的 A 位有序钙钛矿 PbMn3(CrMn3)O12



An AA′ 3 B 4 O 12 型钙钛矿氧化物 PbMn 3 (CrMn 3 )O < b5>是在8 GPa、1373 K下通过高压固相反应合成的。同步辐射X射线衍射显示其具有空间群Im [3 with combining macron] 的立方晶体结构。经X射线光电子能谱验证电荷态为PbMn 3+ 3 (Cr 3+ Mn 3+ 2 )O 12 ,其中 Pb 2+ 和 Mn 3+ 分别按 1 : 3 排列在 A 和 A' 处Cr 3+ 、Mn 3+ 和 Mn 4+ 无序分布在 B 位点。 PbMn 3 (CrMn 3 )O 12 具有 A′ 位长程反铁磁有序 Mn 3+ 自旋约为 66由于 B 位处随机分布的 Cr 3+ 、 Mn 3+ 和 Mn 4+ 阳离子,K 以及随后在 36 K 左右的自旋玻璃化转变。 A' 和 B 位点自旋的这种独特的逐步顺序表明 A'-B 位点自旋相互作用较弱,这主要是由 B 位点 Mn 3+ /Ni 2+ 的差异决定的四重钙钛矿 AMn 3 B 4 O 12 中的 Mn 4+ 数。
更新日期:2024-05-15
down
wechat
bug