NANOlab Center of Excellence literature database -- Query Results

“Microstructure of bilayer manganite PrCa₂Mn₂O₇ showing charge/orbital ordering”. He Z, Tian H, Deng G, Xu Q, Van Tendeloo G, Applied physics letters 102, 212902 (2013). http://doi.org/10.1063/1.4807758 Abstract: The microstructure of the charge/orbital ordering Ruddleden-Popper phase PrCa2Mn2O7 was studied by transmission electron microscopy along both the [001] and the [110] orientation. Three coexisting charge/orbital ordering phases CO1, CO2, and CO3 were observed along the [001] orientation at room temperature. Different from the one-dimensional modulation in the CO1 and CO2 phase, the CO3 phase is characterized by two sets of mutually perpendicular structural modulations. From [110] high angle annular dark field-scanning transmission electron microscopy, we found that the Pr atoms locate in-between the bilayer MnO6 octahedra, which is different from the previous reports. Keywords: A1 Journal article; Electron microscopy for materials research (EMAT) Impact Factor: 3.411 Times cited: 4 DOI: 10.1063/1.4807758 Additional Links: UA library record; WoS full record; WoS citing articles show.php?record=2068
“90°, Rotation of orbital stripes in bilayer manganite PrCa₂Mn₂O₇ studied by in situ transmission electron microscopy”. He ZB, Deng G, Tian H, Xu Q, Van Tendeloo G, Journal of solid state chemistry 200, 287 (2013). http://doi.org/10.1016/j.jssc.2013.01.051 Abstract: We present an in situ transmission electron microscopy study on the half-doped bilayer manganite PrCa2Mn2O7 to reveal the rotation process of the orbital stripes. Between the reported initial and final ordering phases, we identified an intermediate state with two sets of satellite spots to bridge the 90° rotation of the orbital stripes. Furthermore, we determined that the rotation of the orbital stripes does not always occur. Some restricted conditions for the orbital rotation to occur were found and reasons are discussed. Keywords: A1 Journal article; Electron microscopy for materials research (EMAT) Impact Factor: 2.299 Times cited: 5 DOI: 10.1016/j.jssc.2013.01.051 Additional Links: UA library record; WoS full record; WoS citing articles show.php?record=20

Abstract: The microstructure of the charge/orbital ordering Ruddleden-Popper phase PrCa2Mn2O7 was studied by transmission electron microscopy along both the [001] and the [110] orientation. Three coexisting charge/orbital ordering phases CO1, CO2, and CO3 were observed along the [001] orientation at room temperature. Different from the one-dimensional modulation in the CO1 and CO2 phase, the CO3 phase is characterized by two sets of mutually perpendicular structural modulations. From [110] high angle annular dark field-scanning transmission electron microscopy, we found that the Pr atoms locate in-between the bilayer MnO6 octahedra, which is different from the previous reports.

Keywords: A1 Journal article; Electron microscopy for materials research (EMAT)

Impact Factor: 3.411

Times cited: 4

DOI: 10.1063/1.4807758

Additional Links: UA library record; WoS full record; WoS citing articles

show.php?record=2068

Abstract: We present an in situ transmission electron microscopy study on the half-doped bilayer manganite PrCa2Mn2O7 to reveal the rotation process of the orbital stripes. Between the reported initial and final ordering phases, we identified an intermediate state with two sets of satellite spots to bridge the 90° rotation of the orbital stripes. Furthermore, we determined that the rotation of the orbital stripes does not always occur. Some restricted conditions for the orbital rotation to occur were found and reasons are discussed.