Abstract
We report the synthesis, crystal structure, magnetic, electrical/thermal transport properties and the magnetocaloric effect (MCE) of AlC1.1Fe3. With increase in the carbon concentration x, the single-phase AlCxFe3 is obtained for x≥1.1 and the refined lattice constant is about 0.37802nm for AlC1.1Fe3. Magnetic measurements indicate that there exists a second-order ferromagnetic (FM)–paramagnetic (PM) phase transition around 292K. The electrical resistivity displays a good metallic behavior in the whole temperature range except for a broad slope change around the temperature of magnetic transition (∼292K). Meanwhile, a reversible MCE is observed around the FM–PM transition with the maximum value of magnetic entropy change (−ΔSMmax) ∼1.61J/kgK (ΔH=45kOe) and the relative cooling power (RCP) of ∼126J/kg (∼281J/kg) under the magnetic field change ΔH=20kOe (45kOe). Furthermore, it is found that the dominant carriers in AlC1.1Fe3 are hole-type from the studies of thermoelectric power and Hall measurement.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
