کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5459634 | 1516185 | 2017 | 5 صفحه PDF | دانلود رایگان |
- Inverse magnetocaloric effect HoCrO3.
- Enhanced magnetocaloric effect in Fe doped HoCrO3.
- Metamagnetic transitions are evident at low field regime of M vs H.
We report on the magnetic and magnetocaloric properties of 50% Fe3+ doped polycrystalline HoCrO3 compounds in the vicinity of magnetic transitions. Due to complex magnetic interactions, we do see multiple transitions in Ï vs. T graph pertinent to HoCrO3 and HoCr0.5Fe0.5O3 compounds related with Ho3+ ordering, Cr3+ ordering and spin - reorientation (SR). Due to re-orientation of spins, metamagnetic transitions are evident in low field regime of M vs. H. Quantified values of -ÎSM around Ho3+ ordering infer that indeed Fe3+ substitution helped in enhancing magnetocaloric effect of HoCrO3 compound. Such an enhanced -ÎSM values are ascribed to increase in canting of Fe/Cr spins. Present results would be helpful in developing magnetic refrigerant materials for space applications particularly below 30Â K.
Journal: Journal of Alloys and Compounds - Volume 709, 30 June 2017, Pages 410-414