title: Dynamic isomer shift in charge-ordering manganite Y(0.5)Ca(0.5)MnO(3): Mössbauer spectroscopy study.
abstract: We report the Mössbauer spectroscopy study on Fe-doped charge-ordering manganite Y(0.5)Ca(0.5)MnO(3). The dynamic isomer shift is observed for charge-ordering manganite, and its origin may be due to strong Jahn-Teller distortions in Y(0.5)Ca(0.5)MnO(3), causing electron-phonon coupling. The evolution of Mössbauer spectroscopy as a function of temperature shows two different phases with significantly different quadrupole splitting values below the charge-ordering transition temperature. This confirms that there exist two different Mn sites (i.e., Mn(3+) and Mn(4+) ions), which can be identified by the microscopic method of Mössbauer spectroscopy.
authors.forename: H W
authors.initials: HW
authors.lastname: Tian
authors.forename: W T
authors.initials: WT
authors.lastname: Zheng
authors.forename: B
authors.initials: B
authors.lastname: Zheng
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: Q B
authors.initials: QB
authors.lastname: Wen
authors.forename: T
authors.initials: T
authors.lastname: Ding
authors.forename: Z D
authors.initials: ZD
authors.lastname: Zhao