DAFS - Universidad de Zaragoza
DAFS - Universidad de Zaragoza
DAFS - Universidad de Zaragoza
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Manganitas dopadas<br />
(RE1-xAxMnO3)<br />
Magnetita<br />
(Fe 3O 4)<br />
(Fe 3+ )T d(Fe 3+ )O h(Fe 2+ )O hO 4<br />
Espinela invertida<br />
8(Fe3+)Td (½ ½ ½)<br />
16(Fe3+)/ (Fe 2+) Oh (1/8 1/8 1/8)<br />
32 O2- (u u u ) u ≅ 0.255<br />
T>Tc → cúbico (F d-3m )<br />
a = 8.396Å<br />
TTc<br />
Fluctuación <strong>de</strong> la<br />
carga<br />
(conductor)<br />
T
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