EPR in Kagome Staircase Compound Mg_{2.997}Co_{0.003}V_2O_8

Aleshkevych, P.; Fink-Finowicki, J.

doi:10.12693/APhysPolA.111.105

Journal

Acta Physica Polonica A

2007 | 111 | 1 | 105-110

Article title

EPR in Kagome Staircase Compound Mg_{2.997}Co_{0.003}V_2O_8

Authors

P. Aleshkevych , J. Fink-Finowicki

Content

Full texts:

http://przyrbwn.icm.edu.pl/APP/PDF/111/a111z112.pdf [remote]

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Abstracts

The paramagnetic resonance of Co^{2+} ions in Mg_{2.997}Co_{0.003}V_2O_8 single crystals are reported. The EPR spectrum shows two groups of resonance lines associated with two crystallographically nonequivalent Co ions positions that are known in the kagome staircase system as "cross-tie" and "spine" sites. No preferential occupation of Co^{2+} ions in the kagome lattice was observed. The ground state was described by spin-Hamiltonian with an effective electronic spin S=1/2 and nuclear spin I=7/2. The local symmetry of oxygen octahedron surrounding Co ions, main values of the g-factors, and hyperfine structure were determined for both cobalt positions.

Keywords

76.30.Da 76.30.Fc

Discipline

Publisher

Journal

Acta Physica Polonica A

Year

2007

Volume

111

Issue

Pages

105-110

Physical description

Dates

published

2007-01

received

2006-09-04

Contributors

author

P. Aleshkevych

Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

J. Fink-Finowicki

Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

References

1. A.P. Ramirez, in: Handbook of Magnetic Materials, Ed. K.J.H. Busch, Vol. 13, Elsevier Science, Amsterdam 2001, p. 423
2. H. Kageyama, K. Yoshimura, R. Stern, N.V. Mushnikov, K. Onizuka, M. Kato, K. Kosuge, C.P. Slichter, T. Goto, Y. Ueda, Phys. Rev. Lett., 82, 3168, 1999
3. R. Szymczak, M. Baran, R. Diduszko, J. Fink-Finowicki, M. Gutowska, A. Szewczyk, H. Szymczak, Phys. Rev. B, 73, 1, 2006
4. B. Canals, C. Lacroix, Phys. Rev. Lett., 80, 2933, 1998
5. A.P. Ramirez, A. Hayashi, R.J. Cava, R. Siddhartan, B.S. Shastry, Nature, 399, 333, 1999
6. J.D. Pless, N. Erdman, D. Ko, L.D. Marks, P.C. Stair, K.R. Poeppelmeier, Crystal Growth Design, 3, 615, 2003
7. A. Abragam, B. Bleaney, Electron Paramagnetic Resonance of Transition Ions, Clarendon Press, Oxford 1970
8. A. Abragam, M.H.L. Pryce, Proc. R. Soc. Lond. A, 206, 173, 1951
9. M. Tinkham, Proc. R. Soc. Lond. A,236, 549, 1956

Document Type

Publication order reference

Identifiers

DOI

10.12693/APhysPolA.111.105

YADDA identifier

bwmeta1.element.bwnjournal-article-appv111n112kz