NDLI: Specific Heat Near Hmetamag=18 T in UPd2Al3

Content Provider	Springer Nature Link
Author	Kim, J. S. Sato, N. K. Stewart, G. R.
Copyright Year	2001
Abstract	We have measured the specific heat vs. temperature in fields to 20 T of UPd$_{2}$Al$_{3}$ in order to try to determine the reason for the disagreement in the magnetic phase diagram as determined by magnetization and χ $_{ac}$ vs. resistivity measurements, with the resistivity measurements showing the magnetic anomaly trending towards T=0 as H→H $_{metamag}$. Our data show a slight monotonic suppression of T $_{ N }$ with increasing field in agreement with both previous magnetoresistance and magnetization data until H→H $_{metamag}$. However, as field exceeds 17 T the specific heat shows a peak (presumably in a narrow field range connected with both antiferromagnetism and the H>H $_{metamag}$ magnetization anomaly) that is suppressed with further increases in field no lower in temperature than 11.7 K (in contrast to the feature in the magnetoresistivity which, e.g., occurs at 8.4 K in 18 T) before it starts to move up in temperature with increasing field at H≥18 T (H $_{metamag}$). Possible causes of the specific heat anomaly for H>H $_{metamag}$, as well as for the discrepancy between the specific heat and the resistivity as H→H $_{metamag}$, are discussed.
Starting Page	527
Ending Page	535
Page Count	9
File Format	PDF
ISSN	00222291
Journal	Journal of Low Temperature Physics
Volume Number	124
Issue Number	5-6
e-ISSN	15737357
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2001-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Characterization and Evaluation Materials Condensed Matter Magnetism, Magnetic Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Materials Science

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