Zeng Dai, Ren Min, Bao Song-Song, Feng Jian-Shen, Li Li, Zheng Li-Min
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
Chem Commun (Camb). 2015 Feb 14;51(13):2649-52. doi: 10.1039/c4cc09341k.
Two polymorphic layered dysprosium phosphonates α-Dy(2-qpH)(SO4)(H2O)2 (α-Dy) and β-Dy(2-qpH)(SO4)(H2O)2 (β-Dy) (2-qpH2 = 2-quinolinephosphonic acid) which crystallize in monoclinic P2₁/c and triclinic P1̄ space groups, respectively, are reported. Both exhibit field-induced slow relaxation of magnetization at low temperature. The energy barrier for β-Dy is nearly three times that for α-Dy, attributed to the structural differences in the two phases.
报道了两种多晶型层状镝膦酸盐α-Dy(2-qpH)(SO4)(H2O)2（α-Dy）和β-Dy(2-qpH)(SO4)(H2O)2（β-Dy）（2-qpH2 = 2-喹啉膦酸），它们分别结晶于单斜P2₁/c和三斜P1̄空间群。两者在低温下均表现出场诱导的磁化慢弛豫。β-Dy的能垒几乎是α-Dy的三倍，这归因于两相的结构差异。
