Structure and magnetism in $\mathrm{LaCo}{\mathrm{O}}_3$

Abstract

The temperature dependence of the hexagonal lattice parameter $c$ of single crystal $\mathrm{LaCo}{\mathrm{O}}_3$ (LCO) with $H=0$ and $800$Oe, as well as LCO bulk powders with $H=0$, was measured using high-resolution x-ray scattering near the transition temperature $T_o\approx 35$K. The change of $c(T)$ is well characterized by a power law in $T-T_o$ for $T>T_o$ and by a temperature independent constant for $T<T_o$ when convoluted with a Gaussian function of width $8.5$K. This behavior is discussed in the context of the unusual magnetic behavior observed in LCO as well as recent generalized gradient approximation calculations.

6 pages, 5 figures, 2 tables

References in corpus (2)

• Local Structure of La1-xSrxCoO3 determined from EXAFS and neutron PDF studies
• Evolution of magnetic oxygen states in Sr-doped LaCoO${}_3$

Cited by in corpus (2)

• Spin dynamics and unconventional magnetism in insulating La${}_{(1-2x)}$Sr${}_{2x}$Co${}_{(1-x)}$Nb${}_x$O${}_3$
• Structural, Electronic and Magnetic Properties of Bulk and Epitaxial LaCoO${}_3$ through Diffusion Monte Carlo