Specific heat of (U/sub 0. 97/Th/sub 0. 03/)Be/sub 13/ under pressure

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The specific heat, C, of (U/sub 0.97/Th/sub 0.03/)Be/sub 13/ has been measured for 0.1 less than or equal to T less than or equal to 1K and 1.6 less than or equal to P less than or equal to 7.7 kbar, and for 0.1 less than or equal to T less than or equal to 20K with P = 0. For T > 8K both the pure and Th substituted samples have essentially the same C. The peaks in C/T at 0.33 and 0.54 for P = 0 are suppressed and shifted to lower T by pressure. Anomalies in C/T ... continued below

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Pages: 9

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Fisher, R.A.; Lacy, S.E.; Marcenat, C.; Olsen, J.A.; Phillips, N.E.; Fisk, Z. et al. April 1, 1987.

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The specific heat, C, of (U/sub 0.97/Th/sub 0.03/)Be/sub 13/ has been measured for 0.1 less than or equal to T less than or equal to 1K and 1.6 less than or equal to P less than or equal to 7.7 kbar, and for 0.1 less than or equal to T less than or equal to 20K with P = 0. For T > 8K both the pure and Th substituted samples have essentially the same C. The peaks in C/T at 0.33 and 0.54 for P = 0 are suppressed and shifted to lower T by pressure. Anomalies in C/T can be correlated to corresponding rapid changes in magnetic susceptibility, chi. Rapid suppression of the peaks and shift of T/sub c/ to lower values is in marked contrast to the behavior found for pure UBe/sub 13/ whose single peak amplitude decreases approximately linearly with P to about 60% at 9.3 kbar. The broad ''shoulder'' in C/T near 2K that is found for UBe/sub 13/, but not for any other heavy-fermion compound, HFC, is completely suppressed in the Th substituted sample.

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Pages: 9

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NTIS, PC A02/MF A01; 1.

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  • 18. conference on low temperature physics, Kyoto, Japan, 20 Aug 1987

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  • Other: DE87011097
  • Report No.: LBL-23533
  • Report No.: CONF-870873-7
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 6362020
  • Archival Resource Key: ark:/67531/metadc1209121

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  • April 1, 1987

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  • July 5, 2018, 11:11 p.m.

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  • Oct. 26, 2018, 1:40 p.m.

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Fisher, R.A.; Lacy, S.E.; Marcenat, C.; Olsen, J.A.; Phillips, N.E.; Fisk, Z. et al. Specific heat of (U/sub 0. 97/Th/sub 0. 03/)Be/sub 13/ under pressure, article, April 1, 1987; United States. (digital.library.unt.edu/ark:/67531/metadc1209121/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.