کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1650074 1007596 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and spectroscopic investigations of Mn3O4 nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Synthesis and spectroscopic investigations of Mn3O4 nanoparticles
چکیده انگلیسی

Trimanganese tetraoxide (Mn3O4) nanoparticles have been synthesized via hydrothermal process. Nevertheless, homogeneous nanoparticles of Mn3O4 with platelet lozange shape were obtained. The crystallite size ranged from 40 to 70 nm. The Mn3O4 product was investigated by X-ray diffraction, transmission electron microscopy (MET), and impedance spectroscopy. Electrical conductivity measurements showed that the as-synthesized Mn3O4 nanomaterial has a conductivity value which goes from 1.8 10−7 Ω−1 cm−1 at 298 K, to 23 10−5 Ω−1 cm−1 at 493 K. The temperature dependence of the conductivity between 298 and 493 K obeys to Arrhenius law with an activation energy of 0.48 eV.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 64, Issue 21, 15 November 2010, Pages 2395–2398
نویسندگان
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