Sodium doped lanthanum manganites thin films: Influence of the oxygen content on the structural parameters

被引：7

作者：

Alessandri, I

Bontempi, E

Sangaletti, L

Pagliara, S

Malavasi, L

Parmigiani, F

Flor, G

Depero, LE

机构：

[1] Univ Brescia, INSTM, I-25123 Brescia, Italy

[2] Univ Brescia, Lab Strutturist Chim, I-25123 Brescia, Italy

[3] Univ Cattolica Sacro Cuore, INFM, I-25121 Brescia, Italy

[4] Univ Cattolica Sacro Cuore, Dipartimento Fis, I-25121 Brescia, Italy

[5] Univ Pavia, INSTM, I-27100 Pavia, Italy

[6] Univ Pavia, Dipartimento Chim Fis M Rolla, I-27100 Pavia, Italy

来源：

JOURNAL DE PHYSIQUE IV | 2004年 / 118卷

关键词：

D O I：

10.1051/jp4:2004118020

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the structural characterisation of La1-xNaxMnO3+delta thin films deposited by Rf-magnetron sputtering onto SrTiO3 (100) single crystal substrates. In particular, we focussed our attention on a series of samples annealed at different pO(2), ranging from 1 to 10(-6) atm. XRD and microRaman data show an expansion of the perovskite lattice for samples annealed in reducing conditions. This results agree with general manganite gas-solid equilibrium involving the formation of Mn4+ as the oxygen content increases. For pO(2) <10(-6) atm the structure rearranges because of the increasing the oxygen vacancies and the volume of the unit cell shrinks.

引用

页码：165 / 171

页数：7

共 15 条

[1]

ALESSANDRI I, IN PRESS MAT SCI E B

[2] Mixed-valence manganites [J].