کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8153070 | 1524763 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
17O NMR study of the triangular lattice antiferromagnet CuCrO2
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: 17O NMR study of the triangular lattice antiferromagnet CuCrO2 17O NMR study of the triangular lattice antiferromagnet CuCrO2](/preview/png/8153070.png)
چکیده انگلیسی
The single crystalline and powder samples of multiferroic CuCrO2 have been investigated by 17O NMR techniques in the paramagnetic and magnetically ordered states. The unusual negative hyperfine field on oxygen nuclei, Hhfâ¯=â¯â5.2â¯kOe/µB, has been determined in paramagnetic state. The 17O NMR spectrum in ordered state has a shape typical for incommensurate magnetic structure. It can be well described taking into account only dipole fields which are produced by Cr3+-ions with magnetic moment μâ¯=â¯2.2â¯Î¼B. The parameters of the EFG (electric field gradient) tensor - the quadrupole frequency (νQ) and the asymmetry parameter, have been determined. The value of νQ increases monotonously with decreasing temperature in the range 90â¯Kâ¯>â¯T >â¯1.5â¯K. The estimates of the population of the ligands p - orbitals have been obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 458, 15 July 2018, Pages 1-9
Journal: Journal of Magnetism and Magnetic Materials - Volume 458, 15 July 2018, Pages 1-9
نویسندگان
Vasily V. Ogloblichev, Alexey G. Smolnikov, Almaz F. Sadykov, Yuri V. Piskunov, Alexander P. Gerashenko, Yuji Furukawa, Ken-ichi Kumagai, Andrey Yu. Yakubovsky, Konstantin N. Mikhalev, Sergei N. Barilo, Sergei V. Shiryaev, Alexander S. Belozerov,