mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal Universitymrisel-202Research ArticleСтатьиNMR study of quasi-1D magnetic chain in cuprates LiCu2O2 and NaCu2O2GippiusA. A.

Moscow 119992; Moscow 117333

MorozovaE. N.

Moscow 119992; Moscow 117333

OkhotnikovK. S.

Moscow 119992

okhotkir@mail.ruMoskvinA. S.

Ekaterinburg 620083

Moscow State University, Faculty of Physics; Institute of Crystallography RASRussian FederationMoscow State University, Faculty of PhysicsRussian FederationUral State UniversityRussian Federation200621012024812832Copyright © Gippius A.A., Morozova E.N., Okhotnikov K.S., Moskvin A.S., 20242024Gippius A.A., Morozova E.N., Okhotnikov K.S., Moskvin A.S.Gippius A.A., Morozova E.N., Okhotnikov K.S., Moskvin A.S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/202

NMR investigation of magnetic structure and phase transitions in two isostructural quasi-one-dimensional cuprates LiCu2O2 and NaCu2O2 has been performed. While LiCu2O2 exhibits a magnetic phase transition at Tc = 24 K, NaCu2O2 orders magnetically at around 13 K. 6,7Li and 23Na NMR spectra in LiCu2O2 and NaCu2O2, respectively, provide an unambiguous experimental evidence that below Tc an incommensurate in-chain helical spin structure is established in both compounds. However, the features of the observed low temperature NMR are different pointing to different properties of the helical magnetic structure.

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The authors declare that there are no conflicts of interest present.