Showing 73 results for Author: Clarina R. Dela Cruz
Jul, 2026
Journal
One-dimensional (1D) structures provide a unique platform to study the correlated quantum interactions and phase transitions such as unconventional magnetism and superconducting states. Here, we report that iron chalcogenide K3Fe2Se4 with an unusual block-type canted antiferromagnetic (AFM) structure in a clear single chain quasi-1D structure, which is structurally differe…
Jul, 2026
Journal
Pyrochlore magnets of the form 𝑅2𝐵2O7, in which rare-earth ions on the 𝑅 site form a three-dimensional network of corner-sharing tetrahedra, provide a canonical setting for geometrical frustration. Ho-based pyrochlores host a dipolar spin-ice ground state, characterized by Ising moments constrained by the ice rules and elementary excitations analogous to magnetic monopol…
Jul, 2026
Journal
CaFeO3 and CaFe0.95Co0.05O3 single crystals were grown by combing floating-zone method with high oxygen pressure treatment. Both crystals show charge disproportionation of Fe (Fe4+→Fe3++Fe5+) accompanied by a metal-to-insulator transition as well as a crystal structural transformation from Pbnm to 𝑃21/𝑛. However, the slight introduction of Co significantly suppres…
Apr, 2026
Journal
We report the canted antiferromagnetic (AFM) structure together with a spin reorientation in a single chain quasi-one-dimensional (Q-1D) iron chalcogenide Ba2FeSe3. Ba2FeSe3 crystallizes in Pnma (No. 62) orthorhombic structure with linear single iron chains consisting of corner-shared distorted FeSe4 tetrahedra along the 𝑏 axis. Ba2FeSe3 is a narrow-gap semiconductor an…
Feb, 2026
Journal
We report the canted antiferromagnetic (AFM) structure together with a spin reorientation in a single chain quasi-one-dimensional (Q-1D) iron chalcogenide Ba2FeSe3. Ba2FeSe3 crystallizes in Pnma (No. 62) orthorhombic structure with linear single iron chains consisting of corner-shared distorted FeSe4 tetrahedra along the 𝑏 axis. Ba2FeSe3 is a narrow-gap semiconductor an…
Dec, 2025
Journal
Geometrically frustrated magnetic systems, such as those based on the Shastry-Sutherland lattice (SSL), offer a rich playground for exploring unconventional magnetic states. The delicate balance between competing interactions in these systems leads to the emergence of novel phases. We present the characterization of Er2Be2GeO7, an SSL compound with Er3+ ions forming orth…
Nov, 2025
Journal
We present comprehensive neutron scattering data on polycrystalline samples of a new metastable honeycomb material KCoAsO4. Below 𝑇𝑁=14 K, the system orders into a zigzag antiferromagnetic state, with spins ordered into alternating ferromagnetic chains similar to the isostructural sister compound KNiAsO4. In the case of KCoAsO4, we find the moments are robustly canted out…
Sep, 2025
Journal
The Kitaev model has served as a long-sought-after target in the realization of a quantum spin liquid that could host Majorana Fermions. Such non-Abelian anyons could revolutionize quantum computing if properly implemented to overcome decoherence. A 3d7 electronic configuration, like Co2+, has been explored by theory and experimental work to design Kitaev materials. Here,…
Oct, 2024
Journal
Here we report a ferromagnetic compound Ba9V3Te15 with quasi-one-dimensional (1D) spin chains. It was synthesized at high-temperature and high-pressure conditions and systematically investigated via structural, transport, magnetic and heat capacity measurements. Ba9V3Te15 mainly consists of trimerized face-sharing VTe6 octahedral chains running along the 𝑐 axis, which…