- Tytuł:
- I-V Characteristics of Resistive Oxides: DC versus Pulsed Measurements
- Autorzy:
-
Fisher, B.
Genossar, J.
Chashka, K. B.
Patlagan, L.
Reisner, G. M. - Powiązania:
- https://bibliotekanauki.pl/articles/2047215.pdf
- Data publikacji:
- 2007-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
72.20.Ht
75.47.Lx
77.80.Fm - Opis:
- We investigated pulsed and DC I-V characteristics of a variety of resistive oxides. Examples of pulsed, compared with DC characteristics, are shown for samples of La$\text{}_{1.2}$Sr$\text{}_{1.8}$Mn$\text{}_{2}$O$\text{}_{7}$ (a double layer manganite), Pr$\text{}_{2}\text{}_{/}\text{}_{3}$ Ca$\text{}_{1}\text{}_{/}\text{}_{3}$ MnO$\text{}_{3}$ and Bi$\text{}_{1}\text{}_{/}\text{}_{2}$ Sr$\text{}_{1}\text{}_{/}\text{}_{2}$ MnO$\text{}_{3}$ (charge-ordered manganites), Sr$\text{}_{2}$FeMoO$\text{}_{6}$, Sr$\text{}_{2}$CrWO$\text{}_{6}$ and Ba$\text{}_{2}$MnReO$\text{}_{6}$ (double perovskites). For pulsed measurements, single pulses in the ms range were applied. For short-rise-time square pulses, the Joule heating is negligible, as long as the response remains independent of time. The DC I-V characteristics were measured up to current runaway in the negative resistance regime;Δ T never exceeded a fraction of a degree. In most cases the DC characteristics mask a perfectly ohmic or moderately non-ohmic conductivity obtained by pulsed measurements. This demonstrates that the widely used DC I-V measurements in the high current regime are frequently misleading.
- Źródło:
-
Acta Physica Polonica A; 2007, 111, 1; 57-61
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł