Temat: 75.47.De - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Response of Grained La$\text{}_{0.67}$Ca$\text{}_{0.33}$MnO$\text{}_{3}$ Films to Microwave Radiation and the Method for Measuring Electrical Resistance of Grains
Autorzy:: Repšas, K.
Laurinavičius, A.
Vaškevičius, R.-A.
Anisimovas, F.
Deksnys, A.
Vengalis, B.
Powiązania:: https://bibliotekanauki.pl/articles/2047104.pdf
Data publikacji:: 2006-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.47.Lx
75.47.De
Opis:: It was found that the response of grained La$\text{}_{0.67}$Ca$\text{}_{0.33}$MnO$\text{}_{3}$ films to microwave radiation is of thermal nature. A nonresonant method for measuring of the electric resistance of grains was developed. It allows one to avoid the influence of the magnetic field of the wave on the measurement results. The measurements of the temperature dependences of the grain electric resistance indicate that in the vicinity of the maximum-resistance temperature T$\text{}_{m}$, the intrinsic electric resistance of the grains is more than by two orders of magnitude lower than the film resistance measured by applying the dc current. The obtained experimental results agree well with those given by resonant techniques.
Źródło:: Acta Physica Polonica A; 2006, 110, 4; 537-544
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Elastic Properties of Colossal Magnetoresistive Manganites $R_{0.67} Sr_{0.33} Mn O_3$ (R = Pr, Nd, Gd)
Autorzy:: Reddy, Y.
Powiązania:: https://bibliotekanauki.pl/articles/1398673.pdf
Data publikacji:: 2016-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 75.47.Gk
75.47.Lx
62.20.de
43.20.Hq
Opis:: The polycrystalline bulk samples of $R_{0.67} Sr_{0.33} Mn O_3$ (R = Pr, Nd, Gd) were prepared by solid state reaction method and characterized by powder X-ray diffraction. The room temperature elastic behavior of these materials was investigated by employing ultrasonic pulse transmission technique at 1 MHz. The values of elastic constants were computed from longitudinal and shear velocities. The measured values were corrected to zero porosity using Hasselman and Fulrath's formulae. The variation of elastic moduli with the size of rare earth ion is interpreted in terms of strength of interatomic bonding.
Źródło:: Acta Physica Polonica A; 2016, 129, 1; 113-116
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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