Specific features of magnetic order in a multiferroic compound CuCrO2 determined using NMR and NQR data for 63, 65Cu nuclei
| Autor: | Yuji Furukawa, A. F. Sadykov, K. N. Mikhalev, S. N. Barilo, A. Yu. Yakubovskii, A. G. Smol’nikov, V. V. Ogloblichev, S. V. Shiryaev, Yu. V. Piskunov, S. V. Verkhovskii |
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| Rok vydání: | 2017 |
| Předmět: |
Condensed matter physics
Chemistry Nuclear Theory 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Magnetic susceptibility Magnetic field Paramagnetism 0103 physical sciences Quadrupole Materials Chemistry Condensed Matter::Strongly Correlated Electrons Multiferroics 010306 general physics 0210 nano-technology Nuclear quadrupole resonance Hyperfine structure Single crystal |
| Zdroj: | Physics of Metals and Metallography. 118:134-142 |
| ISSN: | 1555-6190 0031-918X |
| Popis: | Results of studying the paramagnetic and ordered phases of a CuCrO2 single crystal using nuclear magnetic and nuclear quadrupole resonances on 63,65Cu nuclei are presented. The measurements have been carried out in wide ranges of temperature (T = 4.2–300 K) and magnetic-field strength (Н = 0–94 kOe), with the magnetic fields being directed along a and c axes of the crystal. The components of the electric-field gradient tensor and the magnetic-shift tensor (Ka,c) have been determined. The temperature dependences Ka(H || a) and Kc(H || c) for the paramagnetic phase are described by the Curie–Weiss law and reproduce the behavior of the magnetic susceptibility (χa,c). The hyperfine field on a copper nucleus has been determined, which is equal to hhfa,c= 33 kOe/μB. Below the temperature ТN = 23.6 K, nuclear magnetic resonance and nuclear quadrupole resonance spectra for 63,65Cu nuclei have been recorded typical of helical magnetic structures, which are incommensurable with the lattice period. |
| Databáze: | OpenAIRE |
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