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Uranium Monosulfide. The Ferromagnetic Transition. The Heat Capacity and Thermodynamic Properties from 1.5° to 350°K

dc.contributor.authorWestrum, Edgar F. Jr.en_US
dc.contributor.authorWalters, Robert R.en_US
dc.contributor.authorFlotow, Howard E.en_US
dc.contributor.authorOsborne, Darrell W.en_US
dc.date.accessioned2010-05-06T22:27:11Z
dc.date.available2010-05-06T22:27:11Z
dc.date.issued1968-01-01en_US
dc.identifier.citationWestrum, Edgar F.; Walters, Robert R.; Flotow, Howard E.; Osborne, Darrell W. (1968). "Uranium Monosulfide. The Ferromagnetic Transition. The Heat Capacity and Thermodynamic Properties from 1.5° to 350°K." The Journal of Chemical Physics 48(1): 155-161. <http://hdl.handle.net/2027.42/70623>en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/70623
dc.description.abstractThe heat capacity of uranium monosulfide was measured from 1.5° to 22°K by an isothermal (isoperibol) method and from 6° to 350°K by an adiabatic technique. The ferromagnetic transition at 180.1°K has a characteristic lambda shape and associated magnetic ordering entropy and enthalpy increments of 1.62 ± 0.2 cal °K−1mole−1 and 231 ± 20 cal mole−1, respectively, over the temperature range 0° to 230°K. The correlation of the thermal data with magnetic studies is discussed. The heat capacity below 9°K is represented by Cp  =  5.588 × 10−3T + 2.627 × 10−4T3 / 2 + 6.752 × 10−5T3cal°K−1mole−1Cp=5.588×10−3T+2.627×10−4T3∕2+6.752×10−5T3cal°K−1mole−1, in which the successive terms represent conduction electronic, magnetic, and lattice contributions. Values of the entropy [S°], enthaply function [(H° − H°0) / T][(H°−H°0)∕T], and Gibbs‐energy function [(G° − H°0) / T][(G°−H°0)∕T] are 18.64 ± 0.005, 8.94 ± 0.002, and − 9.70 ± 0.02 cal °K−1 mole−1, respectively, at 298.15°K. The Gibbs energy of formation at 298.15°K is − 72.9 ± 3.5 kcal mole−1.en_US
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dc.publisherThe American Institute of Physicsen_US
dc.rights© The American Institute of Physicsen_US
dc.titleUranium Monosulfide. The Ferromagnetic Transition. The Heat Capacity and Thermodynamic Properties from 1.5° to 350°Ken_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelPhysicsen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Chemistry, University of Michigan, Ann Arbor, Michiganen_US
dc.contributor.affiliationotherArgonne National Laboratory, Argonne, Illinoisen_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/70623/2/JCPSA6-48-1-155-1.pdf
dc.identifier.doi10.1063/1.1667893en_US
dc.identifier.sourceThe Journal of Chemical Physicsen_US
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dc.owningcollnamePhysics, Department of


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