The surface terminal layer and composition of the colossal magnetoresistance perovskite: La_0.65Pb_0.35MnO₃

Authors

C.N. Borca, University of Nebraska-Lincoln
Delia Ristoiu, CNRS Laboratoire Louis Nee´l, 25 avenue des Martyrs BP 166, 38042 Grenoble CEDEX 09, France
Q.L. Xu, University of Nebraska-Lincoln
Sy_Hwang Liou, University of Nebraska-LincolnFollow
Shireen Adenwalla, University of Nebraska-LincolnFollow
Peter A. Dowben, University of Nebraska-LincolnFollow

Date of this Version

May 2000

Comments

Published Journ. Appl. Phys. 87 (2000) 6104-6106. Permission to use.

Abstract

The composition in the surface region of the colossal magnetoresistance perovskite manganite materials, La_0.65Pb_0.35MnO₃ has been studied using angle resolved x-ray photoemission spectroscopy. The results are consistent with a Mn–O terminal layer and Pb segregation to the near-surface region. This is similar to the behavior exhibited by La_0.65Pb_0.35MnO₃ and La_0.65Pb_0.35MnO₃. The O–Mn–O terminal layer appears to be close to the Mn³+ valence state. ©2000 American Institute of Physics.