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Equation of State of Zircon-Type TbVO_{4}

100%

Minikayev R., Paszkowicz W., Werner-Malento E., Lathe C., Dąbkowska H.

Acta Physica Polonica A

2010

vol. 117

issue 2

319-322

High-pressure energy-dispersive X-ray diffraction study were performed on zircon-type phase of terbium orthovanadate, TbVO_{4}, in the pressure range up to 7 GPa. For analysis of the collected diffraction spectra, Le Bail refinements were performed. The values of bulk modulus and its pressure derivative (B_0 = 121 GPa, B' = 4.1) were obtained from fitting of the second-order Birch-Murnaghan equation of state. The equation of state derived for TbVO_{4}, is compared with earlier data based on the Raman spectroscopic studies and with data of several other rare-earth orthovanadates.

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

100%

Mosiniewicz-Szablewska E., Gładczuk L., Dąbkowska H., Pytel B., Szymczak H.

Acta Physica Polonica A

2000

vol. 97

issue 5

897-900

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.

Effect of Heavy Ion Irradiation on the Magnetic Properties of CuGeO_{3}

73%

Gładczuk L., Mosiniewicz-Szablewska E., Szymczak R., Baran M., Dąbkowska H., Choiński J., Czosnyka T., Szymczak H.

Acta Physica Polonica A

2000

vol. 97

issue 5

871-874

The influence of heavy ion irradiation on the magnetic properties of the spin-Peierls compound CuGeO_{3} has been investigated by means of the electron paramagnetic resonance, the spontaneous magnetization, and the low field ac susceptibility. The measurements were performed on the CuGeO_{3} single crystals before and after irradiation with 80 MeV oxygen ions in the wide temperature range of 2-300 K. It was found that the irradiation induced an increase in the EPR signal intensity, magnetization, and susceptibility of this material. It was also shown that the irradiation does not lead to a decrease in the spin-Peierls transition temperature and to the formation of an antiferromagnetic phase which is expected to appear in disordered spin-Peierls systems.

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3 Acta Physica Polonica A

1 2010

2 2000

3 Dąbkowska H.

2 Gładczuk L.

2 Mosiniewicz-Szablewska E.

2 Szymczak H.

1 Baran M.

1 Choiński J.

1 Czosnyka T.

1 Lathe C.

1 Minikayev R.

1 Paszkowicz W.

1 Pytel B.

1 Szymczak R.

1 Werner-Malento E.

Search results

Equation of State of Zircon-Type TbVO_{4}

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

Effect of Heavy Ion Irradiation on the Magnetic Properties of CuGeO_{3}