Abstract
The stoichiometric Nd 2NiO 4 compound presents two structural phase transitions. A high-temperature transformation from tetragonal I4/mmm to orthorhombic Bmab and a low-temperature transition from orthorhombic to another tetragonal structure, P4 2/ncm. Associated with this second phase transition there is a strong microstrain effect that produces anisotropic broadening of the Bragg reflections. The effect of hydrostatic pressure in this compound has been studied, showing that the critical temperature of the low-temperature phase transition is greatly diminished and the fluctuation of the lattice parameters becomes bigger. On the contrary, pressure does not seem to affect magnetic ordering.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
