2007/07/31 by Manuel Angst, M. Angst, R. P. Hermann +15
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Charge (physics) #Charge ordering #Chemistry #Condensed matter physics #Crystallography #Differential scanning calorimetry #Magnetic and transport properties of perovskites and related materials #Materials science #Multiferroics and related materials #Optics #Order (exchange) #Phase (matter) #Physics #Quantum mechanics #Scattering #Spectroscopy #Superstructure #Thermodynamics #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.99.256402
published as Phys. Rev. Lett. 99, 256402 (2007) · 4 p., 5 fig.; v2: slightly expanded introduction + minor changes. PRL in print
arxiv created 2007/10/24 · openalex publication_date 2007/12/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The temperature dependence of charge order in Fe2OBO3 was investigated by resistivity and differential scanning calorimetry measurements, Mössbauer spectroscopy, and synchrotron x-ray scattering, revealing an intermediate phase between room temperature and 340 K, characterized by coexisting mobile and immobile carriers, and by incommensurate superstructure modulations with temperature-dependent propagation vector (1/2, 0, tau). The incommensurate modulations arise from specific antiphase boundaries with low energy cost due to geometrical charge frustration.