engleski

Layered hybrid organic-inorganic nanobelts exhibiting a field-induced magnetic transition

Here, we present the synthesis of layered, ferrimagnetic, Co-based organic-inorganic hybrid nanobelts formed through self-organization in a non-aqueous process. The belts are formed solvothermally by reacting cobalt(III) acetylacetonate with benzoic acid in benzyl alcohol at 150 °C. Benzoic acid not only acts as an intercalation molecule for the formation of the layered organic-inorganic hybrid structure, but also as a shape-directing agent for manipulating the product morphology. These nanobelts are typically obtained with 50 – 200 nm width, about 10 – 20 nm thickness and several hundreds of microns in length. Furthermore, magnetic measurements show that the resulting layered nanobelts exhibit a ferrimagnetic transition at 40 K and superparamagnetic behavior below 40 K. Moreover, the upturn of the magnetization at 5 K and H = 40 kOe indicate a smooth field-induced magnetic transition with critical field of approximately 4 T.

layers; ferrimagnetism; field-induced transition

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