Magnetic properties of Cu[C6H2(COO)4][H3N-(CH2)2-NH3]⋅3H2O-A quasi-two-dimensional S=1/2 antiferromagnet on rectangular lattice

被引：1

作者：

Danylchenko, Petro ^{[1
]}

Tarasenko, Robert ^{[1
]}

Orendacova, Alzbeta ^{[1
]}

Strecka, Jozef ^{[1
]}

Cizmar, Erik ^{[1
]}

Tkac, Vladimir ^{[1
]}

Orendac, Martin ^{[1
,2
]}

机构：

[1] Safarik Univ, Inst Phys, Fac Sci, Pk Angelinum 9, Kosice 04154, Slovakia

[2] Univ Chem & Technol, Dept Solid State Engn, Techn 5, Prague 16628, Czech Republic

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2023年 / 182卷

关键词：

Rectangular lattice; Heisenberg antiferromagnet; Heat capacity; Susceptibility; Magnetization; TRANSITION; RESONANCE;

D O I：

10.1016/j.jpcs.2023.111613

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The analysis of specific heat, magnetic susceptibility and magnetization identified the studied compound Cu [C6H2(COO)4][H3N-(CH2)2-NH3]& sdot;3H2O as a quasi-two-dimensional S = 1/2 Heisenberg antiferromagnet on the rectangular lattice with the intrachain coupling J1/kB approximate to 7.39 K and the interaction ratio R approximate to 0.44. A phase transition to a magnetically ordered state was observed in zero magnetic field at TN = 1.28 K. The analysis of magnetic specific heat in non-zero magnetic fields revealed features characteristic of the field-induced Bere-zinskii-Kosterlitz-Thouless phase transition theoretically predicted for ideal two-dimensional magnets. The electron paramagnetic resonance studies of Cu[C6H2(COO)4][H3N-(CH2)2-NH3]& sdot;3H2O revealed the increase of gx and gy and decrease of gz below 25 K due to the presence of dipolar coupling and the exchange anisotropy. The upturn of linewidth appearing below 30 K can be ascribed to the development of intralayer magnetic correlations.

引用

页数：7

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