锯齿形M链构成的波浪状层状结构新化合物Ca 3 M 3 (PO 4 ) 4 (M = Ni, Co)的合成及磁性
摘要:
摘要 采用常规高温固相反应合成了两种同构化合物Ca 3 M 3 (PO 4 ) 4 (M = Co, Ni)。标题化合物的结构在空间群为 C 2/ c 的单斜晶系中结晶。磁性M 2+ 离子表现出三种不同的氧配位环境,例如四面体、金字塔和八面体。磁性多面体的独特连接导致 a - b 平面中有趣的波浪状网络,显示 V 状簇交替插入锯齿形链之间。磁性测量表明同构化合物 Ca 3 M 3 (PO 4 ) 4 表现出不同的磁性,其中 Ca 3 Ni 3 (PO 4 ) 4 在 17 K 具有反铁磁性有序,而 Ca 3 Co 3 (PO 4 ) 4 显示顺磁性行为低至 2 K。
A Spectroscopic and Structural Study of M(3d)<sup>2+</sup>-Doped β-Tricalcium Phosphate - the Binding Properties of Ni<sup>2+</sup>and Cu<sup>2+</sup>in the Pseudo-Octahedral Ca(5)O<sub>6</sub>Host-Sites
The pseudo-octahedralCa(5)2+ position in β-Ca3(PO4)2 is a highly interesting host site with unexpectedly short Ca–O bond lengths, which can be easily substituted by small 3d-cations, such as Ni2+. Also Cu2+ may fully replace Ca(5)2+, leading to remarkably large energetic and steric distortion effects due to Eg⊗ϵg Jahn–Teller coupling – with a ground-state splitting of about 1.25 eV. The Cu(Ni)–O bond
Syntheses and magnetic properties of new compounds Ca3M3(PO4)4 (M = Ni, Co) with a wave-like layer structure built by zigzag M-chains
作者:Wenbin Guo、Zhangzhen He、Suyun Zhang
DOI:10.1016/j.jallcom.2017.05.052
日期:2017.9
lead to an interesting wave-like network in the a - b plane, showing the V-like clusters inserted alternatively between the zigzag chains. Magnetic measurements suggest that isostructural compounds Ca 3 M 3 (PO 4 ) 4 exhibit different magneticproperties, in which Ca 3 Ni 3 (PO 4 ) 4 possesses an antiferromagnetic ordering at 17 K while Ca 3 Co 3 (PO 4 ) 4 shows paramagnetic behavior down to 2 K.
摘要 采用常规高温固相反应合成了两种同构化合物Ca 3 M 3 (PO 4 ) 4 (M = Co, Ni)。标题化合物的结构在空间群为 C 2/ c 的单斜晶系中结晶。磁性M 2+ 离子表现出三种不同的氧配位环境,例如四面体、金字塔和八面体。磁性多面体的独特连接导致 a - b 平面中有趣的波浪状网络,显示 V 状簇交替插入锯齿形链之间。磁性测量表明同构化合物 Ca 3 M 3 (PO 4 ) 4 表现出不同的磁性,其中 Ca 3 Ni 3 (PO 4 ) 4 在 17 K 具有反铁磁性有序,而 Ca 3 Co 3 (PO 4 ) 4 显示顺磁性行为低至 2 K。