http://hdl.handle.net/20.500.12128/7768
Tytuł: | Dielectric and magnetic characteristics of Ca1−xMnxMoO4 (0 ≤ x ≤ 0.15) nanomaterials |
Autor: | Groń, Tadeusz Karolewicz, M. Tomaszewicz, E. Guzik, M. Oboz, Monika Sawicki, Bogdan Duda, Henryk Kukuła, Zenon |
Słowa kluczowe: | Scheelite-type structure; Mn2+-doped nanomaterials; Combustion synthesis; Electrical properties; Magnetic properties |
Data wydania: | 2019 |
Źródło: | Journal of Nanoparticle Research, Vol. 21, Iss. 1 (2019), Art. No. 8 |
Abstrakt: | Scheelite-type Ca1−xMnxMoO4 (x = 0.0,0.01, 0.05, 0.10 and 0.15) nanomaterials were successfully synthesized via a combustion route. Dielectric studies showed a weak n-type electrical conductivity characteristic for insulators and low relative permittivity (εr < 15) decreasing with increasing Mn2+ content. CaMoO4 and Mn2+-doped nanomaterials are chemically compatible with Al and Ag electrodes and promising for lowtemperature co-fired ceramic applications. Magnetic studies showed, at room-temperature diamagnetism for pure CaMoO4, the balance between diamagnetism and paramagnetism for Ca1−xMnxMoO4 (x = 0.01) and paramagnetic behaviour when 0.05 ≤ x ≤ 0.15 as well as the short-range antiferromagnetic interactions growing in strength as Mn2+ content increases. The Landé factor fitting procedure showed a spin-only contribution to the magnetic moment. CaMoO4 matrix unexpectedly revealed the residual paramagnetism at low temperatures derived probably from the molybdenum ions having unpaired 4d electrons as well as a paramagneticdiamagnetic transition at 70 K. |
URI: | http://hdl.handle.net/20.500.12128/7768 |
DOI: | 10.1007/s11051-018-4450-9 |
ISSN: | 1572-896X |
Pojawia się w kolekcji: | Artykuły (WNŚiT) |
Plik | Opis | Rozmiar | Format | |
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Gron_Dielectric_and_magnetic_characteristics_of.pdf | 4 MB | Adobe PDF | Przejrzyj / Otwórz |
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