Related Experiment Video
Updated: Oct 27, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Comprehensive Investigation of Structural, Electrical, and Magnetic Properties of Dy2CoIrO6: A 3d-5d-4f
Mithun Kumar Majee1,2, Divya Prakash Dubey2,3, Balwant Singh Chauhan2
1Department of Physics, School of Basic Sciences, Galgotias University, Greater Noida, Uttar Pradesh203201, India.
Abstract:
In this work, we present a comprehensive investigation of the structural, electrical, and magnetic properties of Dy2CoIrO6, a 3d-5d-4f heterotri-spin system. X-ray diffraction analysis confirms a distorted monoclinic crystal structure (space group: P21/n) with slight antisite disorder (∼8%) between the Co and Ir ions. X-ray photoelectron spectroscopy reveals the coexistence of mixed valence of Co2+/3+ and Ir4+/5+ ions. The high electrical resistivity confirms the insulating nature of the compound, while the low-temperature transport behavior is well described by the 3D variable-range hopping model. The dc magnetization exhibits two magnetic transition temperatures at TN1 = 21.5 K and TN2 = 145 K, together with a magnetic compensation temperature of approximately 61 K. The magnetic transition below TN1 is attributed to weak ferrimagnetic ordering arising from antiferromagnetic coupling between the Dy(4f) and Co(3d)/Ir(5d) sublattices, whereas the transition at TN2 is associated with antiferromagnetic ordering resulting from antiferromagnetic interactions between the Co and Ir spins. A detailed analysis of the ac susceptibility exhibits a pronounced frequency dependence of the spin-freezing temperature, indicating the presence of glassy magnetic behavior below 11.5 K in Dy2CoIrO6 compound.
More Related Videos
Related Concept Videos
Valence Bond Theory
Diamagnetism
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Ferromagnetism
Aromatic Hydrocarbon Cations: Structural Overview
Removing one hydrogen from the intervening CH2 group with both...
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...

