Magnetization of Charge-ordered la(2-x)sr(x)nio(4+delta)
P. G. Freeman, A. T. Boothroyd, D. Prabhakaran, D. Gonz\'alez
TL;DR
This study investigates the magnetic properties of La(2-x)Sr(x)NiO(4+delta) crystals, revealing spin-charge stripe behavior, spin-glass phases, and a memory effect influenced by temperature and doping levels.
Contribution
It provides new insights into the magnetic phases and memory effects in charge-ordered nickelate crystals with varying Sr doping.
Findings
Glassy behavior linked to spin-charge stripes
Presence of a low-temperature spin-glass phase
Memory effect in magnetic field-temperature history
Abstract
We report magnetization measurements on La(2-x)Sr(x)NiO(4+ delta) single crystals, with 0 < x < 0.5. Glassy behaviour associated with the formation of spin-charge stripes, and a separate spin-glass phase at low temperatures were observed. We have also found a `memory effect' in the magnetic field -- temperature history, which is found to be suppressed in the low temperature spin state of the x = 0.33 crystal.
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