A comprehensive review of structure work on high-T c oxides as reported during the years
1987 and 1988 is given. Thirteen structures are refined from X-ray single-crystal and/or …

The latest discovery of high temperature superconductivity near 80 K in La3Ni2O7 under
high pressure has attracted much attention. Many proposals are put forth to understand the …

抄録< jats: title> Abstract</jats: title>< jats: p> In Chapter 2, Dr Rietveld has provided an
account of the inception and early development of his method and of the growth of its …

An overall survey of the structural and magnetic features of the La 2 NiO 4+ delta system is
presented as a result of neutron diffraction experiments. The stoichiometric compound …

Using Rietveld refinement of neutron powder diffraction data, we show that the excess
oxygen in La 2 NiO 4+ δ (0.13< δ< 0.18) is incorporated as an interstitial oxygen defect. The …

Abstract La 2− x Ba x CuO 4 has been found to undergo the following sequence of
transformations upon cooling: tetr.(I4/mmm)→ ortho.(Bmab)→ tetr.(P 4 2/ncm), over a range …

The crystallographic and group theoretical analysis of the structural phase transitions in
perovskite and perovskite-like crystals is reviewed. We include ABX3 perovskites and their …

Rare-earth metal oxides with perovskite-type crystal structures are under consideration for
use as air electrode materials for intermediate to high temperature electrochemical device …

Publisher Summary This chapter discusses the results on magnetic materials obtained by a
single technique—namely, muon spin rotation (μSR) spectroscopy. The magnetic properties …

Starting with only the chemical formula, La2NiO4, the phase diagram and the various
structures it contains have been modelled using bond valences. The bonding graph is …