Authors: S.-G. Eriksson, S. Ivanov, J. Eriksen, M. Valkeapää, Lars Gunnar Johansson, Håkan Rundlöf, R. McGreevy, P. Berastegui, P. Björnsson, M. Rubhausen, J. Bäckström, M. Käll, L. Börjesson

505

Neutron Powder Diffraction Study of Structural Phase Transitions in BaPbO₃

Authors: S.A. Ivanov, S.-G. Eriksson, Roland Tellgren, Håkan Rundlöf

511

Crystal Structure Studies of Natural and Synthetic Apatites by Neutron Powder Diffraction

Authors: Th. Leventouri, B.C. Chakoumakos, N. Papanearchou, V. Perdikatsis

517

Thermal Study of a Precursor for Catalyst Supports: Well- and Micro-Crystallised Boehmites

Authors: A.E. Gobichon, B. Rebours, P. Euzen

523

Aluminum Nitride Compressibility and Thermal Expansion under Pressure

Authors: Stanislaw Gierlotka, Andrzej Gregorczyk, Bogdan F. Palosz, Ewa Grzanka, Piotr Biczyk, Ulrich Bismayer

529

High-Pressure Studies of La_0.25Ca_0.75MnO₃ Using X-Ray Diffraction at the ESRF Synchrotron

Authors: Davide Levy, C. Meneghini

534

Synchrotron X-Ray Powder Diffraction Study of a Pressure-Induced Phase Transition in Ferroelectric PbTiO₃

Authors: Davide Levy, Alessandra Sani

539