ISIS Neutron and Muon Source Data Journal

Crystal field excitations and spin wave studies of competing zigzag chain antiferromagnet: CaCoP2O7

Abstract: Low-dimensional quantum magnets have always been interesting candidates for their interesting magnetic excitations and exotic ground states. Here, we have grown a new Kramer active Co2+ Jeff ?½, 1D-zigzag chain compound CaCoP2O7 via the optical floating zone (OFZ) method. The crystal has triclinic crystal system with P-1 space group. As grown crystals phase purity, crystalline quality, and anisotropy have been probed via powder x-ray diffraction, Laue-diffraction, and magnetization measurements. Thermodynamic data suggest CaCoP2O7 has a long-range magnetic ordering at TN = 6.6 K and the inverse susceptibility on this compound reveals effective moment ?eff = 5.09 ?B. We confirmed the spin state is found to be pseudo spin-1/2 state by using Bonner-Fisher spin-1/2 1D chain model fit, which reveals nearest neighbor (NN) interactions J = 7.45 K and higher g value as g = 4 indicating that the magnetic lattice in CaCoP2O7 has huge anisotropy. Here we proposed to investigate CEF and spin wave using MERLIN in CaCoP2O7.

Principal Investigator: Mr KOUSHIK CHAKRABORTY
Experimenter: Ms Isha Isha
Experimenter: Dr Arvind Kumar Yogi
Local Contact: Dr Devashi Adroja
Experimenter: Ms Aditi Agrawal
Experimenter: Dr Masahiko Isobe
Experimenter: Dr Abhisek Bandyopadhyay

DOI: 10.5286/ISIS.E.RB2510686

ISIS Experiment Number: RB2510686

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Mr KOUSHIK CHAKRABORTY et al; (2025): Crystal field excitations and spin wave studies of competing zigzag chain antiferromagnet: CaCoP2O7, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2510686

Data is released under the CC-BY-4.0 license.