Variations in elastic and anelastic properties of Co3O4 due to magnetic and spin-state transitions
-
Zhiying Zhang
,
Johannes Koppensteiner
Abstract
Elastic anomalies and acoustic dissipation associated with spin-state transitions of Co3+ in Co3O4 have been investigated using resonant ultrasound spectroscopy (RUS) at high frequencies (0.1-1.5 MHz) between 6 and 1107 K, and dynamic mechanical analysis (DMA) at low frequencies (0.1-50 Hz) between 127 and 775 K. Above ~800 K, the shear modulus decreases with increasing temperature and the acoustic dissipation increases. The amount of softening scales linearly with an empirical order parameter for low spin → low spin + high spin states derived from analysis of changes in unit-cell volume with temperature. The mechanism for anelastic losses is not understood but must be due to relaxation of strains coupled either to changes in spin state or to changes of cation configuration between tetrahedral and octahedral sites occurring by electron exchange. The pattern of shear modulus softening, in proportion to the spin order parameter, is likely to be general for cubic structures containing cations, which undergo spin-state transitions, such as Fe2+ in (Mg,Fe)O. Below ~30 K, RUS data show a large softening of the shear modulus and a steep increase in acoustic dissipation due to the magnetic transition from paramagnetic to antiferromagnetic. This could be understood in terms of the influence of a symmetry breaking strain coupled to the magnetic order parameter such that cubic lattice geometry is not maintained. Possible magnetic space groups for the antiferromagnetic structure are considered through the use of the group theory.
© 2015 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Redetermination of the structure of 5C pyrrhotite at low temperature and at room temperature
- Thermal elastic behavior of CaSiO3-walstromite: A powder X-ray diffraction study up to 900 °C
- Magnesiohögbomite-2N4S: A new polysome from the central Sør Rondane Mountains, East Antarctica
- Hanjiangite, a new barium-vanadium phyllosilicate carbonate mineral from the Shiti barium deposit in the Dabashan region, China
- Combined neutron and X-ray diffraction determination of disorder in doped zirconolite-2M
- Focused ion beam preparation and characterization of single-crystal samples for high-pressure experiments in the diamond-anvil cell
- Phase stability and elastic properties of the NAL and CF phases in the NaMg2Al5SiO12 system from first principles
- Redistribution of REE, Y, Th, and U at high pressure: Allanite-forming reactions in impure meta-quartzites (Sesia Zone, Western Italian Alps)
- MAS NMR measurements and ab initio calculations of the 29Si chemical shifts in dumortierite and holtite
- Aluminum ordering and clustering in Al-rich synthetic phlogopite: {1H} → 29Si CPMAS HETCOR spectroscopy and atomistic calculations
- Cell assemblies for reproducible multi-anvil experiments (the COMPRES assemblies)
- Recrystallization rims in zircon (Valle d’Arbedo, Switzerland): An integrated cathodoluminescence, LA-ICP-MS, SHRIMP, and TEM study
- Temperature and humidity effects on ferric sulfate stability and phase transformation
- Unraveling complex <2 μm clay mineralogy from soils using X-ray diffraction profile modeling on particle-size sub-fractions: Implications for soil pedogenesis and reactivity
- Variations in elastic and anelastic properties of Co3O4 due to magnetic and spin-state transitions
- High-pressure behavior of space group P2/n omphacite
- Twinning in pyromorphite: The first documented occurrence of twinning by merohedry in the apatite supergroup
- Spectroscopic characterization of alkali-metal exchanged natrolites
- Coupled (Li+, Al3+) substitutions in hydrous forsterite
- Crystal chemistry of trioctahedral micas-2M1 from Bunyaruguru kamafugite (southwest Uganda)
- Menchettiite, AgPb2.40Mn1.60Sb3As2S12, a new sulfosalt belonging to the lillianite series from the Uchucchacua polymetallic deposit, Lima Department, Peru
- Adolfpateraite, K(UO2)(SO4)(OH)(H2O), a new uranyl sulphate mineral from Jáchymov, Czech Republic
- Amorphous materials: Properties, structure, and durability
- Amorphous materials: Properties, structure, and durability
- Letter. Determination of the oxidation state of Cu in substituted Cu-In-Fe-bearing sphalerite via μ-XANES spectroscopy
- Letter. Morphological quantification of hierarchical geomaterials by X-ray nano-CT bridges the gap from nano to micro length scales
Articles in the same Issue
- Redetermination of the structure of 5C pyrrhotite at low temperature and at room temperature
- Thermal elastic behavior of CaSiO3-walstromite: A powder X-ray diffraction study up to 900 °C
- Magnesiohögbomite-2N4S: A new polysome from the central Sør Rondane Mountains, East Antarctica
- Hanjiangite, a new barium-vanadium phyllosilicate carbonate mineral from the Shiti barium deposit in the Dabashan region, China
- Combined neutron and X-ray diffraction determination of disorder in doped zirconolite-2M
- Focused ion beam preparation and characterization of single-crystal samples for high-pressure experiments in the diamond-anvil cell
- Phase stability and elastic properties of the NAL and CF phases in the NaMg2Al5SiO12 system from first principles
- Redistribution of REE, Y, Th, and U at high pressure: Allanite-forming reactions in impure meta-quartzites (Sesia Zone, Western Italian Alps)
- MAS NMR measurements and ab initio calculations of the 29Si chemical shifts in dumortierite and holtite
- Aluminum ordering and clustering in Al-rich synthetic phlogopite: {1H} → 29Si CPMAS HETCOR spectroscopy and atomistic calculations
- Cell assemblies for reproducible multi-anvil experiments (the COMPRES assemblies)
- Recrystallization rims in zircon (Valle d’Arbedo, Switzerland): An integrated cathodoluminescence, LA-ICP-MS, SHRIMP, and TEM study
- Temperature and humidity effects on ferric sulfate stability and phase transformation
- Unraveling complex <2 μm clay mineralogy from soils using X-ray diffraction profile modeling on particle-size sub-fractions: Implications for soil pedogenesis and reactivity
- Variations in elastic and anelastic properties of Co3O4 due to magnetic and spin-state transitions
- High-pressure behavior of space group P2/n omphacite
- Twinning in pyromorphite: The first documented occurrence of twinning by merohedry in the apatite supergroup
- Spectroscopic characterization of alkali-metal exchanged natrolites
- Coupled (Li+, Al3+) substitutions in hydrous forsterite
- Crystal chemistry of trioctahedral micas-2M1 from Bunyaruguru kamafugite (southwest Uganda)
- Menchettiite, AgPb2.40Mn1.60Sb3As2S12, a new sulfosalt belonging to the lillianite series from the Uchucchacua polymetallic deposit, Lima Department, Peru
- Adolfpateraite, K(UO2)(SO4)(OH)(H2O), a new uranyl sulphate mineral from Jáchymov, Czech Republic
- Amorphous materials: Properties, structure, and durability
- Amorphous materials: Properties, structure, and durability
- Letter. Determination of the oxidation state of Cu in substituted Cu-In-Fe-bearing sphalerite via μ-XANES spectroscopy
- Letter. Morphological quantification of hierarchical geomaterials by X-ray nano-CT bridges the gap from nano to micro length scales
