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Magnetoelastic and Optical Studies of Low Temperature Magnetic Relaxation in Rare-Earth Orthoaluminates with Ising Ions

100%

Krynetskii I., Popkov A., Borowiec M., Szymczak H., Zayarnyuk T.

Acta Physica Polonica A

2000

vol. 97

issue 5

889-892

The new class of magnetic materials with low temperature magnetic relaxation was studied. It was evidenced that the crystal DyAlO_{3} with antiferromagnetically ordered high anisotropy rare-earth ions showed an exponential magnetic relaxation. For the first time low temperature magnetic relaxation was investigated by means of magnetostriction and rare-earth optical absorption spectra instead of standard magnetization measurements. The possible mesoscopic nature of tunneling process was suggested.

Photoconductivity of Bi_{12}Ti_{1-x}Pb_{x}O_{20} Single Crystal

86%

Borowiec M., Kozankiewicz B., Szymczak H., Żmija J., Majchrowski A., Załęski M., Zayarnyuk T.

Single crystals of mixed sillenites Bi_{12}Ti_{1-x}Pb_{x}O_{20} were grown using the top seeded solution growth method. The pulse illumination was used to study the phototransport properties of these crystals. It was evidenced that the illumination changed the photoconducting properties by 4-5 orders of magnitude comparing with previously studied Bi_{12}MeO_{20}, where Me = Ge, Si, Ti. The performed experiments indicate on the photogeneration of metallic grains in the insulating matrix of Bi_{12}Ti_{1-x}Pb_{x}O_{20}. Correlations between photochromism and photoconductivity was established.

Crystalline Structure of Potassium Holmium Double Tungstate

52%

Borowiec M., Dyakonov V., Woźniak K., Dobrzycki Ł., Majchrowski A., Michalski E., Zubov E., Khatsko E., Zayarnyuk T., Szewczyk A., Gutowska M., Rykova A., Barański M., Domukhovski V., Shtyrkhunova V., Iwanowski P., Żmija J., Szymczak H.

Acta Physica Polonica A

2011

vol. 119

issue 6

835-837

The potassium holmium double tungstate was prepared by using top seeded solution growth technique. Structural investigations have been performed at room temperature. The KHo(WO_4)_2 single crystal belongs to the monoclinic space group C2/c with the unit-cell parameters: a = 10.624(2) Å, b = 10.352(2) Å, c = 7.5434(15) Å, β = 130.78(3)^{o}, and Z = 4. The atomic coordinates, isotropic and anisotropic displacement parameters and interionic distances for the studied structure were determined.

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3 Acta Physica Polonica A

1 2011

1 2000

1 1999

3 Borowiec M.

3 Szymczak H.

3 Zayarnyuk T.

2 Majchrowski A.

2 Żmija J.

1 Barański M.

1 Dobrzycki Ł.

1 Domukhovski V.

1 Dyakonov V.

1 Gutowska M.

1 Iwanowski P.

1 Khatsko E.

1 Kozankiewicz B.

1 Krynetskii I.

1 Michalski E.

1 Popkov A.

1 Rykova A.

1 Shtyrkhunova V.

1 Szewczyk A.

1 Woźniak K.

1 Załęski M.

1 Zubov E.

Search results

Magnetoelastic and Optical Studies of Low Temperature Magnetic Relaxation in Rare-Earth Orthoaluminates with Ising Ions

Photoconductivity of Bi_{12}Ti_{1-x}Pb_{x}O_{20} Single Crystal

Crystalline Structure of Potassium Holmium Double Tungstate