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6 Νοε 2020 · In this review article we provide a detailed overview of the traditional methods available for the preparation of hematite microparticles of different shapes, devoting special attention on some of the most common hiccups that could hider a successful synthesis.
29 Ιαν 2021 · Magnetic properties are reported of recently prepared spherical hematite (α‐Fe2O3) particles of narrow size distributions with average diameters (d) varying between 20 and 300 nm. Mass magnetization …
In this review article we provide a detailed overview of the traditional methods available for the preparation of hematite microparticles of different shapes, devoting special attention on some of the most common hiccups that could hider a successful synthesis.
19 Δεκ 2017 · Three commercial hematite powders were characterized to assess differences which may affect their use as iron precursors. The hematites have varying particle and crystallite sizes and hence different magnetic properties. Additionally, mixtures of hematite-magnetite powders were studied.
30 Νοε 2014 · Hematite nanoparticles are synthesized by using the hydrothermal synthesis method. The SQUID measurements show blocking temperature TB = 52 K and superparamagnetism. A TEM measurements show spherical particles and narrow size distribution. The sample did not exhibit the Morin transition.
1 Δεκ 2010 · In the present study, we focus on hydrothermally-produced micron-sized hematites of different morphologies. An integrated rock magnetic investigation with additional chemical analysis has been conducted to determine the effect of morphology, OH incorporation, and vacancies on the magnetic properties of hematite. 2. Samples and methods.
12 Μαΐ 2023 · Hematite is a canted antiferromagnetic insulator, promising for applications in spintronics. Here we present ab initio calculations of the tensorial exchange interactions of hematite and use them to understand its magnetic properties by parametrizing a semiclassical Heisenberg spin model.
