PRESSURE-INDUCED INTERMEDIATE-TO-LOW SPIN STATE TRANSITION IN LACOO3

By Thomas Vogt, J. Hriljac, N. Hyatt, P. Woodward. 2002

143 citations recorded by the source corpus.

Synchrotron x-ray powder-diffraction experiments reveal that the transition from a magnetic intermediate spin (IS) state t 5 2ge 1 g to a nonmagnetic low-spin ground state t 6 2g in LaCoO 3 normally observed when cooling manifests itself under pressure by an anomalously low bulk modulus of 150(2) GPa and an initially very large Co-O bond compressibility of 4.8×10 - 3 GPa - 1 which levels off near 4 GPa. The continuous depopulation of the IS state is driven by an increased crystal-field splitting resulting in an effective reduction of the size of the Co 3 + cation.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/39bc35a02a7f338338094851042d4d7d7147e3bf

How researchers see this paper

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In Condensed Matter Physics

1. J. Rueff
2. Yang Ding
3. Lin Wang
4. Bing Li
5. H. Mao
6. Xiao-Jia Chen
7. Abhay Shukla

In Electronic, Optical and Magnetic Materials

1. Yang Ding
2. Lin Wang
3. Bing Li
4. H. Mao
5. Xiao-Jia Chen

Citations in the corpus

• Inelastic x-ray scattering by electronic excitations under high pressure (2008, background): “More recently, Vogt et al. (2003) using x-ray powder diffraction interpreted the pressure-induced changes as a continuous transition from IS to LS state.”
• Solids, liquids, and gases under high pressure (2018, methodology): “Using XES, Vankó et al. (2006) confirmed the IS-to-LS transition in LaCoO3 that was reported by Vogt et al. (2003).”