Emergence of metamagnetic transition, re-entrant cluster glass and spin phonon coupling in Tb2CoMnO6.
Khyati AnandArkadeb PalMohd AlamSambhab DanShiv KumarSurajit GhoshSeema KumariAmitabh DasMasahiro SawadaAnita MohanVasant G SatheSandip ChatterjeePublished in: Journal of physics. Condensed matter : an Institute of Physics journal (2021)
The double perovskite compound Tb2CoMnO6has been investigated using x-ray absorption spectroscopy (XAS), Raman spectroscopy, magnetic measurements andab initioband structure calculations. It is observed that both anti-ferromagnetic (AFM) and ferromagnetic (FM) phase coexist in this material. The presence of anti-site disorder (ASD) has been established from the analysis of neutron diffraction data. Moreover, a prominent metamagnetic transition is observed in theM(H) behavior that has been explained with the drastic reorientation of the pinned domain which are aligned antiparallel by the antiphase boundaries (APBs) at zero field. The ASD further gives rise to spin frustration at low temperature which leads to the re-entrant cluster glass ∼33 K. The coupling between phononic degree of freedom and spin in the system has also been demonstrated. It is observed that the theoretical calculation is consistent with that of the experimentally observed behavior.
Keyphrases
- room temperature
- raman spectroscopy
- autism spectrum disorder
- ionic liquid
- density functional theory
- high resolution
- mycobacterium tuberculosis
- single molecule
- attention deficit hyperactivity disorder
- atomic force microscopy
- intellectual disability
- molecular dynamics
- big data
- high speed
- magnetic resonance imaging
- machine learning
- molecularly imprinted
- transition metal
- tandem mass spectrometry