Spin Glass State in S=3/2 Kagomé Antiferromagnet Co(N_{3})_{2}(bpg)[(CH_{3})_{2}(NCOH)]_{4/3}

• Authors: P. Vrábel , E. Čižmár , A. Orendáčová , S. Gao , M. Orendáč
• Languages of publication: EN

Abstracts

EN

Specific heat, magnetic susceptibility and magnetization of Co(N_{3})_{2}(bpg)[(CH_{3})_{2}(NCOH)]_{4/3}, representing S=3/2 kagomé system are reported. Long-range ordering at 16 K was revealed, however, at lower temperatures slow spin dynamics is still found. The analysis of alternating susceptibility suggests the onset of glassy state. The study of the time dependence of magnetization revealed the existence of more relaxation channels with pronounced different relaxation times. The observed behaviour is consistent with the formation of topological spin glass in which relaxation is governed by both spin and chiral degrees of freedom.

Keywords

EN

75.50.Ee; 75.30.Et; 75.10.Nr

Discipline

• 75.30.Et: Exchange and superexchange interactions(see also 71.70.Gm Exchange interactions)
• 75.10.Nr: Spin-glass and other random models(for spin glasses and other random magnets, see 75.50.Lk)
• 75.50.Ee: Antiferromagnetics

• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 266-267

Dates

published

2014-07

Contributors

author

P. Vrábel

• Department of Physics, Faculty of Electrical Engineering and Informatics, Letná 9, 042 00 Košice, Slovakia

author

E. Čižmár

• Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia

author

A. Orendáčová

• Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia

author

S. Gao

• State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing, 100871, China

author

M. Orendáč

• Institute of Physics, Faculty of Sciences, P.J. Šafárik University, Park Angelinum 9, 041 54 Košice, Slovakia

References

• [1] A.S. Wills, V. Dupuis, E. Vincent, J. Hammann, R. Calemczuk, Phys. Rev. B 62, R9264 (2000), doi: 10.1103/PhysRevB.62.R9264
• [2] A.S. Wills, G.S. Oakley, D. Visser, J. Frunzke, A. Harrison, K.H. Andersen, Phys. Rev. B 64, 094436 (2001), doi: 10.1103/PhysRevB.64.094436
• [3] M. Ferrero, F. Becca, F. Mila, Phys. Rev. B 68, 214431 (2003), doi: 10.1103/PhysRevB.68.214431
• [4] X.Y. Wang, L. Wang, Z.M. Wang, S. Gao, J. Am. Chem. Soc. 128, 674 (2006), doi: 10.1021/ja055725n

Identifiers

DOI

10.12693/APhysPolA.126.266