The lattice parameter of the perovskite lanthanum aluminate doped with alkaline-earth cations has been measured. Magnesium can occupy aluminum sites, but is too small to occupy lanthanum sites. Calcium and strontium can occupy lanthanum sites, but are too large to occupy aluminum sites.
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N WESTERN FORENSIC SCI LAB,WASHINGTON HALL,EUXTON,CHORLEY,LANCASHIRE,ENGLANDN WESTERN FORENSIC SCI LAB,WASHINGTON HALL,EUXTON,CHORLEY,LANCASHIRE,ENGLAND