Structural chemistry and magnetic properties of Pr3-xSr1+xCrNiO8

Polycrystalline samples of the n=1 Ruddlesden-Popper system Pr3-xSr1+xCrNiO8 have been synthesized over the composition range 0.00.1 adopt the tetragonal space group I4/mmm; Pr2.9Sr1.1CrNiO8 adopts the orthorhombic space group Fmmm. There is no evidence of Cr/Ni cation ordering in any composition. A maximum in the zero-field cooled magnetic susceptibility is observed at a temperature Tf that decreases with increasing Sr content; 52≤Tf (K)≤13. The frequency dependence of Tf observed in a.c. susceptibility measurements, together with the analysis of neutron diffraction data, suggests that the atomic magnetic moments in these compositions adopt a spin-glass-like state below Tf. © 2008 Elsevier Inc. All rights reserved.</x≤1.0

Use of in situ neutron diffraction to monitor high-temperature, solid/H2-gas reactions.

For the first time, the chemistry in H(2) gas of a perovskite-like material, Pr(2)Sr(2)CrNiO(8), has been monitored at temperatures up to approximately 700 degrees C, in situ, by neutron powder diffraction

Structural chemistry and magnetic properties of Pr3-xSr1+xCrNiO8

J. Solid State Chem., 2008, 181, 2217-222

Redox behaviour of potential SOFC cathode materials La1.6Sr0.4Ni1-​xCoxO4+δ (x = 0.6 and 0.8) determined from in situ neutron powder diffraction under flowing O2 and 5​%H2

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