Communications

High-frequency electron spin resonance study of a single crystal of Egyptian blue at 4.2 K

S. A. Kozyukhin^a, S. I. Bezzubov^a, A. V. Gavrikov^a, A. V. Semeno^b, A. N. Samarin^b, V. V. Glushkov<sup>b

a</sup> N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation
^b A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, 119991 Moscow, Russian Federation

Abstract: For the first time, high-frequency electron spin resonance spectra were measured for a single crystal of CaCuSi₄O₁₀ (the ancient inorganic pigment Egyptian blue) at helium temperatures. In contrast to earlier experiments performed with polycrystalline samples, our measurements allowed us to discover the anisotropy of the linewidth, which should take place in a low dimensional magnetic system.

Keywords: Egyptian blue, single crystal, ESR spectroscopy, structure, XRD.

Received: 03.09.2025
Accepted: 16.10.2025

Language: English

DOI: 10.71267/mencom.7907