Journal Article BZT–xBCT DFT Ruddlesden–Popper metal halide perovskite Sn–Pb alloys X-ray diffraction Zr‐MOFs ancient Sn–Cu bronzes applied electric fields authentication barium titanate chromium telluride coexisting phases complex functional materials cultural heritage density functional theory electrokinetics emphanisis gas–solid interactions grain sizes high-energy diffraction high-resolution detectors in situ in situ X-ray absorption fine structure in situ X-ray diffraction inelastic neutron scattering local structure distortion lone pair expression metal–organic framework formation metal–organic frameworks