Role of Ag in La1-xAgxMnO3 manganite perovskite
Date
2005
Authors
Xu, Q Y
Wang, Rongping
Zhang, Z
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
Electron-energy-loss spectroscopy (EELS) has been used to study the element contents of the grains in the bulk polycrystalline La 1-xAg xMnO 3 ceramic samples prepared by conventional solid-state reaction process in air. Only characterized core-shell ionization-edge EELS spectra of La, Mn, and O were observed while no spectrum of Ag was detected, indicating that Ag is not doped into manganite perovskites. However, it was found by electron spin resonance investigation that the ferromagnetic phase is enhanced with the increase of the nominal Ag composition and reaches its maximum around x=0.35 in the ferromagnetic and paramagnetic coexistence of La 1-xAg xMnO 3 systems. The unique role of Ag was ascribed to the introduction of oxygen into manganite perovskites, leading to further oxidation of manganite perovskite grains.
Description
Keywords
Keywords: ferromagnetic material; manganite perovskite; perovskite; silver; unclassified drug; air; article; ceramics; chemical composition; crystallization; electron energy loss spectroscopy; electron spin resonance; grain; ionization; observation; oxidation; samp
Citation
Collections
Source
Physical Review B: Condensed Matter and Materials
Type
Journal article
Book Title
Entity type
Access Statement
License Rights
Restricted until
2037-12-31
Downloads
File
Description