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Measuring the Spin-Lattice Relaxation Magnetic Field Dependence of Hyperpolarized [1-13C]pyruvate
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Spin-lattice correlation in Eu3+ doped antiferromagnet TmFeO3
Poorva Sharma1, Arvind Yogi2, Ashwini Kumar3
1Department of Physics, International Center for Quantum and Molecular Systems, Materials Genome Institute, Shanghai University, Shangda Road 99, Shanghai, 200444, China. sxcao@shu.edu.cn renwei@shu.edu.cn and Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Physical Chemistry Chemical Physics : PCCP
|August 22, 2019
Summary
Europium-doped Thulium Iron Oxide (TmFeO3) exhibits an orthorhombic structure and reveals spin reorientations in iron ions. The study highlights a strong spin-lattice interaction and influences on electronic hybridization.
Area of Science:
- Solid State Physics
- Materials Science
- Magnetism
Background:
- Thulium Iron Oxide (TmFeO3) is an important multiferroic material.
- Doping with rare-earth elements can modify its physical properties.
Purpose of the Study:
- To investigate the physical properties of Europium (Eu)-doped TmFeO3.
- To understand the effects of Eu doping on the crystal structure, magnetic behavior, and electronic interactions.
Main Methods:
- X-ray diffraction (XRD) for structural analysis.
- Magnetic susceptibility (χ) measurements for magnetic properties.
- Raman scattering to study temperature-dependent interactions.
- X-ray absorption spectroscopy (XAS) for valence state and hybridization analysis.
Main Results:
- Eu-doped TmFeO3 retains an orthorhombic structure (Pbnm space group).
- Magnetic measurements indicate spin reorientations of Fe3+ ions.
- Raman spectra show significant temperature-dependent changes, confirming strong spin-lattice interaction.
- XAS results reveal Fe valence states and strong hybridization between O(2p) and Fe(3d) states.
Conclusions:
- Eu doping does not alter the fundamental orthorhombic structure of TmFeO3.
- The study confirms significant spin-lattice coupling and electronic hybridization in Eu-doped TmFeO3.
- These findings provide insights into the complex interplay of magnetic and electronic properties in doped perovskites.
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