Copper oxycarbonate thin films of the (CaCuO2)(m)(Ba(2-x)A(x)CuO(2)CO(3))(n) (A = Ca, Sr) system have been deposited, using the pulsed laser deposition (PLD) technique, on (100) LaAlO3 and (110) NdGaO3 substrates. The m = 0 member of the family, Ba2-xSrxCuO2CO3 (x = 0.1 and x = 0.4) has been deposited in a selective way for the first time on both LaAlO3 and NdGaO3. The best results have been obtained for NdGaO3 substrates, but a double orientation of the film, [001] and [110], is found by transmission electron microscopy (TEM) for x = 0.4. Ba2-xCaxCuO2CO3 (x = 0.2) has also been studied. At a deposition temperature of 620 degrees C, a Ba2CuO2CO3 (B2CC) type structure is stabilized, whereas at 680 degrees C another perovskite is isolated. Attempts to deposit the member (m = 1, n = 1, x = 0) of the family, i.e., Ba2CaCu2O4CO3, on LaAlO3 using a single multiphase sintered ceramic target led to the formation of a B2CC type structure (m = 0) coherently intergrown with CaCu2O3 and Ca2CuO3 extended defects. The structures and structural mechanisms are discussed. No diamagnetic transition was observed in any of these films down to 5 K.
Prellier, W., Tebano, A., Allen, J.l., Hamet, J.f., Mercey, B., Hervieu, M., et al. (1997). Pulsed laser deposition of Ba(2-x)A(x)CuO(2)CO(3) (A=Ca, Sr) thin films, m=0 member of the series (CaCuO2)(m)(Ba(2-x)A(x)CuO(2)CO(3))(n) (A=Ca, Sr). CHEMISTRY OF MATERIALS, 9(1), 119-126.
Pulsed laser deposition of Ba(2-x)A(x)CuO(2)CO(3) (A=Ca, Sr) thin films, m=0 member of the series (CaCuO2)(m)(Ba(2-x)A(x)CuO(2)CO(3))(n) (A=Ca, Sr)
TEBANO, ANTONELLO;
1997-01-01
Abstract
Copper oxycarbonate thin films of the (CaCuO2)(m)(Ba(2-x)A(x)CuO(2)CO(3))(n) (A = Ca, Sr) system have been deposited, using the pulsed laser deposition (PLD) technique, on (100) LaAlO3 and (110) NdGaO3 substrates. The m = 0 member of the family, Ba2-xSrxCuO2CO3 (x = 0.1 and x = 0.4) has been deposited in a selective way for the first time on both LaAlO3 and NdGaO3. The best results have been obtained for NdGaO3 substrates, but a double orientation of the film, [001] and [110], is found by transmission electron microscopy (TEM) for x = 0.4. Ba2-xCaxCuO2CO3 (x = 0.2) has also been studied. At a deposition temperature of 620 degrees C, a Ba2CuO2CO3 (B2CC) type structure is stabilized, whereas at 680 degrees C another perovskite is isolated. Attempts to deposit the member (m = 1, n = 1, x = 0) of the family, i.e., Ba2CaCu2O4CO3, on LaAlO3 using a single multiphase sintered ceramic target led to the formation of a B2CC type structure (m = 0) coherently intergrown with CaCu2O3 and Ca2CuO3 extended defects. The structures and structural mechanisms are discussed. No diamagnetic transition was observed in any of these films down to 5 K.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
