Effect of Neutron Irradiation on the EPR Spectra of CuGeO_{3}

• Authors: E. Mosiniewicz-Szablewska , L. Gładczuk , H. Dąbkowska , B. Pytel , H. Szymczak
• Languages of publication: EN

Abstracts

EN

The influence of neutron irradiation on the electron paramagnetic resonance spectra of the spin-Peierls compound CuGeO_{3} was investigated in the wide temperature range 2-300 K. It was found that the irradiation induced appreciable changes in the EPR signal intensity, resonance line width and g-factor of this material. It was also shown that the irradiation leads to a decrease in the spin-Peierls transition temperature. For higher irradiation doses, an antiferromagnetically ordered phase can be observed at lower temperatures. This phase coexists with the spin-Peierls phase. The observed decrease in the spin-Peierls transition temperature after irradiation may be associated with some changes in topological and chemical short-range order or with the transmutation of the fraction of ^{63}Cu in the ^{63}Cu(n,α)^{60}Co reaction.

Keywords

EN

75.30.Kz; 75.50.Ee; 76.30.Da

Discipline

• 76.30.Da: Ions and impurities: general
• 75.50.Ee: Antiferromagnetics
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 5
• Pages: 897-900

Dates

published

2000-05

Contributors

author

E. Mosiniewicz-Szablewska

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

author

L. Gładczuk

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

author

H. Dąbkowska

• Brockhouse Institute for Materials Research, McMaster University, Hamilton, Canada

author

B. Pytel

• Institute of Atomic Energy, Otwock-Świerk, Poland

author

H. Szymczak

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

Identifiers

DOI

10.12693/APhysPolA.97.897