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2 Acta Physica Polonica A

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Magnetocaloric Effect in La_{0.8}Sr_{0.2}MnO_{3} Film

100%

Szymczak R. , Dyakonov K. , Radelytskyi I. , Dyakonov V. , Szymczak H.

Acta Physica Polonica A

2015

tom 128

nr 1

56-58

Thin epitaxial film of La_{0.8}Sr_{0.2}MnO_{3} has been deposited on yz-cut LiNbO_{3} by pulsed laser ablation. The film was characterized by X-ray diffraction and magnetic measurements as a single phase. The magnetic properties and the magnetocaloric effect have been measured as a function of magnetic field and temperature. A reasonably high magnetocaloric effect indicates that this film might provide an efficient material for micro magnetic refrigerators.

Magnetic and Ferroelectric Ordering in the TbMnO_3 Film

72%

Sazanovich A. , Nikolaenko Y. , Paszkowicz W. , Mikhaylov V. , Dyakonov K. , Medvedev Y. , Nizhankovskii V. , Dyakonov V. , Szymczak H.

Acta Physica Polonica A

2014

tom 125

nr 1

128-130

Measurements of magnetization and electric polarization performed for the TbMnO_3 film grown onto the single crystal [100] SrTiO_3 substrate using magnetron sputtering technique exhibit series of anomalies related to the magnetic and electric ordering of the Tb^{3+} and Mn^{3+} sublattices. The detailed temperature dependences of the electric polarization and dielectric constant of the TbMnO_3 film have shown that the ferroelectric phase appears below 30 K in magnetic field H > 1 T applied in-plane and out-of-plane of the film.