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https://doi.org/10.1016/j.ssc.2010.06.028
DC Field | Value | |
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dc.title | Normal and inverse magnetocaloric effects in La0:5Ca 0:5Mn1-xNixO3 | |
dc.contributor.author | Krishnamoorthi, C. | |
dc.contributor.author | Barik, S.K. | |
dc.contributor.author | Siu, Z. | |
dc.contributor.author | Mahendiran, R. | |
dc.date.accessioned | 2014-10-16T09:34:21Z | |
dc.date.available | 2014-10-16T09:34:21Z | |
dc.date.issued | 2010-09 | |
dc.identifier.citation | Krishnamoorthi, C., Barik, S.K., Siu, Z., Mahendiran, R. (2010-09). Normal and inverse magnetocaloric effects in La0:5Ca 0:5Mn1-xNixO3. Solid State Communications 150 (35-36) : 1670-1673. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ssc.2010.06.028 | |
dc.identifier.issn | 00381098 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/97360 | |
dc.description.abstract | We have investigated magnetic and magnetocaloric properties of La 0.5Ca0.5Mn1-xNixO3 (x=0, 0.02, 0.04, 0.06, & 0.08). It is shown that charge-ordered antiferromagnetic ground state of x=0 is destabilized and ferromagnetism is induced by just 2% Ni substitution. The ferromagnetic Curie temperature (TC) decreases from TC=220K for x=0 to 85K (x=0.08). Unusual field-induced metamagnetic transition is found above TC for x=0.02-0.06 and even below TC in the parent compound (x=0). Magnetic entropy change (ΔSm) was estimated from isothermal magnetization data and it is found that the parent compound (x=0) exhibits both normal (negative ΔSm) and inverse (positive ΔSm) magnetocaloric effects at TC and TN (Neel temperature), respectively. The ΔSm=+6.5Jkg-1K-1 at TN is twice larger than that at TC(ΔSm=-3Jkg-1K-1) for a field change (ΔH) of 5T. However, all the Ni doped samples in La0.5Ca 0.5Mn1-xNixO3 system show only normal magnetocaloric effect at TC. The largest MCE in the Ni doped series occurs for x=0.04(ΔSm=-3.9Jkg-1K-1,ΔH=5T) which also has the largest relative cooling power (RCP=235J/kg,ΔH=5T) in the series. We discuss our results in the scenario of phase separation induced by Ni substitution. © 2010 Elsevier Ltd. All rights reserved. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.ssc.2010.06.028 | |
dc.source | Scopus | |
dc.subject | A. Manganites | |
dc.subject | C. Magnetization | |
dc.subject | D. Magnetocaloric effect | |
dc.subject | D. Metamagnetic transition | |
dc.type | Article | |
dc.contributor.department | PHYSICS | |
dc.description.doi | 10.1016/j.ssc.2010.06.028 | |
dc.description.sourcetitle | Solid State Communications | |
dc.description.volume | 150 | |
dc.description.issue | 35-36 | |
dc.description.page | 1670-1673 | |
dc.description.coden | SSCOA | |
dc.identifier.isiut | 000281216800018 | |
Appears in Collections: | Staff Publications |
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