Magnetic properties of synthetic Ni 3 Si 2 O 5 (OH) 4 nanotubes
Andrei A. KrasilinA. S. SemenovaД. Г. КеллерманV. N. NevedomskyВ. В. Гусаров
Abstract
The present study focuses on the magnetic properties of the nanotubular Ni3 Si2 O5 (OH)4 pecoraite, the structural analogue of chrysotile, obtained by hydrothermal synthesis. The cell parameters of the material, determined by X-ray diffraction, are , , and . The element analysis revealed the decrease of the Ni:Si ratio after hydrothermal treatment. The synthesized nanotubes have bigger outer and inner diameters in comparison to chrysotile. Using a vibration sample magnetometer, we determined the temperature of the ferromagnetic transition (23.7 K), of the ion in pecoraite and the blocking temperature (18 K).
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