= B. D. Begg
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<B. D. Begg> coauthored research on plutonium substitution at zirconium sites in <zirconolite>. The reported structural changes include transitions between zirconolite variants and a pyrochlore-related structure.
Replacing one ion by another can change preferred coordination and charge compensation. A nominal substitution is consequently a hypothesis about a crystal's atomic sites, not merely a change in its bulk elemental recipe.<Structural Effect of Pu Substitutions on the Zr-Site in Zirconolite by B. D. Begg and others>[Research topic and author attribution in the primary publication]{ref}
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