Temat: 77.80.Jk - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Dielectric Relaxation Phenomena in SBN Single Crystals Doped with Ce
Autorzy:: Korchak, Yu.
Kapustianyk, V.
Fedor, B.
Girnyk, I.
Eliyashevskyi, Yu.
Powiązania:: https://bibliotekanauki.pl/articles/1505140.pdf
Data publikacji:: 2011-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 77.22.-d
77.22.Ch
77.22.Gm
77.80.Jk
Opis:: The dielectric study of $Sr_{0.73}Ba_{0.27}Nb_2O_6:Ce$ (SBN) crystals along [010] crystallographic axis was performed in the temperature region of 310-360 K and frequency range from 25 Hz up to 1 MHz. The thermal dipole relaxation of quasi-Debye-type for this orientation of sample was observed in both investigated structural phases. The phase transition was most clearly seen from the temperature dependence of the relaxation time at $T_{c}$ = 320 K. The relaxation processes were related to the collective oscillations of the Nb-O bonds in the two different type corner-sharing $NbO_6$ octahedra aligned along c-axis.
Źródło:: Acta Physica Polonica A; 2011, 119, 6; 871-874
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Electrocaloric Cooling - A New Application of Relaxor Ferroelectrics
Autorzy:: Suchaneck, G.
Gerlach, G.
Powiązania:: https://bibliotekanauki.pl/articles/1031012.pdf
Data publikacji:: 2018-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 77.70.+a
84.60.Bk
77.80.Jk
77.22.Ch
Opis:: Until now, relaxor ferroelectrics are considered as a class of disordered materials possessing peculiar structures and properties which are not yet generalized into a universal model explaining the significant amount of experimental data available. In this work, we demonstrate that one feature of relaxor ferroelectrics - the extraordinary dielectric response - is well-suited for application in electrocaloric refrigerators. We consider the electrocaloric effect with special attention to relaxor ferroelectrics, the dielectric response in the temperature region of interest, the efficiency and the figure of merit of relaxor ferroelectrics for electrocaloric application.
Źródło:: Acta Physica Polonica A; 2018, 133, 4; 1003-1005
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Magnetoelectric Properties of $0.3Bi_{0.95}Dy_{0.05}FeO_3-0.7Pb(Fe_{2//3}W_{1//3})O_3$ Multiferroic
Autorzy:: Stoch, A.
Stoch, P.
Kulawik, J.
Zieliński, P.
Maurin, J.
Powiązania:: https://bibliotekanauki.pl/articles/1490931.pdf
Data publikacji:: 2012-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.85.+t
77.22.-d
77.55.Nv
77.80.-e
77.80.Jk
Opis:: Pb-based complex perovskites with $Fe^{3+}$ like $Pb(Fe_{2//3}W_{1//3})O_3$ were found to be interesting because of their unique properties such as relaxor and magnetoelectric behavior. $Pb(Fe_{2//3}W_{1//3})O_3$ is ferroelectric with ferroelectric Curie temperature $T_{C}$ between 150 and 200 K and at the same time is antiferromagnetic with magnetic Néel temperature about 400 K. $BiFeO_3$ is a well known perovskite compound which exhibits ferroelectric ($T_{C}$ = 1103 K) and antiferromagnetic ($T_{N}$ = 643 K) ordering simultaneously. The polycrystalline sample of $0.3Bi_{0.95}Dy_{0.05}FeO_3-0.7Pb(Fe_{2//3}W_{1//3})O_3$ were synthesized using standard sintering procedure. Magnetization vs. magnetic field (at 4.2 K) curves were measured. Magnetoelectric properties of the sample were obtained.
Źródło:: Acta Physica Polonica A; 2012, 121, 1; 128-130
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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