Manganese Disulfide (Hauerite) and Manganese Ditelluride. Thermal Properties from 5 to 350°K and Antiferromagnetic Transitions
dc.contributor.author | Westrum, Edgar F. Jr. | en_US |
dc.contributor.author | Grønvold, Fredrik | en_US |
dc.date.accessioned | 2010-05-06T21:06:44Z | |
dc.date.available | 2010-05-06T21:06:44Z | |
dc.date.issued | 1970-04-01 | en_US |
dc.identifier.citation | Westrum, Edgar F.; Grønvold, Fredrik (1970). "Manganese Disulfide (Hauerite) and Manganese Ditelluride. Thermal Properties from 5 to 350°K and Antiferromagnetic Transitions." The Journal of Chemical Physics 52(7): 3820-3826. <http://hdl.handle.net/2027.42/69763> | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/69763 | |
dc.description.abstract | The heat capacities of manganese disulfide and manganese ditelluride were determined by adiabatic calorimetry in the range 5–350°K. Lambda‐type transitions are present in both compounds with maxima at 47.93°K for MnS2 and at 83.0°K for MnTe2. Entropies, enthalpies, and Gibbs energy function values are calculated and tabulated. At 298.15°K they are: S° = 23.88cal/mole⋅°K,H° − H0° = 3384cal/mole,− [(G° − H0°) / T] = 12.258cal/mole⋅°KS°=23.88cal∕mole⋅°K,H°−H0°=3384cal∕mole,−[(G°−H0°)∕T]=12.258cal∕mole⋅°K for MnS2 and 34.66, 4416, and 19.847 for MnTe2. The clearly cooperative entropy increments are only 0.71 cal/mole⋅°K for MnS2 and 0.80 for MnTe2. Available magnetic susceptibility data are interpreted in terms of zero‐field splitting of the 6S5/26S5∕2 state of the manganese 3d53d5 electrons. The resulting contributions to the heat capacity are evaluated. At 298°K the combined λ‐transitional and Schottky contributions to the entropy are 2.6 and 2.4 cal/mole⋅°K for MnS2 and MnTe2, respectively. | en_US |
dc.format.extent | 3102 bytes | |
dc.format.extent | 417379 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/pdf | |
dc.publisher | The American Institute of Physics | en_US |
dc.rights | © The American Institute of Physics | en_US |
dc.title | Manganese Disulfide (Hauerite) and Manganese Ditelluride. Thermal Properties from 5 to 350°K and Antiferromagnetic Transitions | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48104 | en_US |
dc.contributor.affiliationother | Institute of Inorganic Chemistry, University of Oslo, Blindern, Norway | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/69763/2/JCPSA6-52-7-3820-1.pdf | |
dc.identifier.doi | 10.1063/1.1673563 | en_US |
dc.identifier.source | The Journal of Chemical Physics | en_US |
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dc.owningcollname | Physics, Department of |
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