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• W3021372015 abstract "The magnetocaloric effect of intermetallic compounds of Tb3Co and Ho3Co is studied under high pressures up to ∼1 GPa using pressure dependent dc magnetisation and specific heat measurements at ambient conditions. The magnetic entropy change (-ΔS M) obtained from magnetisation data and adiabatic change in temperature (ΔT ad) determined from zero-field specific heat and magnetisation data are found to be nearly identical within error limits with those deduced from purely field dependent specific heat experiments. With increasing hydrostatic pressure to ∼1 GPa, the -ΔS M and ΔT ad, both show a significant enhancement of about 37% and 13%, respectively for 9 T field change in case of Tb3Co. On the other hand, Ho3Co exhibits a decrease of about 8% in both -ΔS M and ΔT ad with increasing pressure. The refrigerant capacity (RC) also increases from 650 J kg-1 to 847 J kg-1 in the case of Tb3Co and it goes down from 665 J kg-1 to 615 J kg-1 for Ho3Co for an increase of pressure to 1 GPa. With increasing pressure, the peak widths of both -ΔS M and ΔT ad increase in case of Tb3Co, although the increase is more in -ΔS M. However, such noticeable changes in peak widths with pressure were not observed in Ho3Co. At ambient pressure, peak of -ΔS M ([Formula: see text]) scales with [Formula: see text] for both the compounds, consistent with the prediction of mean field theory (MFT) for second order magnetic transition. However, deviation from MFT was noticed at high pressures as [Formula: see text] was found to scale with [Formula: see text] instead of [Formula: see text] for both the alloys. Further, normalised -ΔS M curves for different ΔH and pressures collapse on a single universal curve in both the compounds thereby indicating that the second order magnetic transition persists even up to ∼1 GPa pressure." @default.
• W3021372015 created "2020-05-13" @default.
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• W3021372015 date "2020-06-19" @default.
• W3021372015 modified "2023-09-25" @default.
• W3021372015 title "High pressure study of magnetocaloric effect in Ho3Co and Tb3Co" @default.
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• W3021372015 doi "https://doi.org/10.1088/1361-648x/ab90a8" @default.
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