Publikation: Specific heat of EuxSr1-xO near the ferromagnetic phase transition
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1992
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Zeitschrift für Physik / B. 1992, 89(1), pp. 39-43. Available under: doi: 10.1007/BF01320827
Zusammenfassung
High-resolution measurements of the specific heat, C, near the ferromagnetic phase transition of the diluted ferromagnetic system Eux Srl_xO are reported. Samples with four different concentrations (x = 1, x =0.9, x =0.7 and x =0.5) have been studied and the expected phase diagram, i.e. the linear decrease of T~ with decreasing x, is confirmed. Our specific-heat data of the pure EuO samples yield a critical exponent e = -0.12_+ 0.02 in contrast to literature results, but in agreement with the value expected theoretically for this three-dimensional Heisenberg system. The origin of the discrepancies is traced down to differences in data analysis.
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STROKA, B., Jochen WOSNITZA, Elke SCHEER, Hilbert von LÖHNEYSEN, W. PARK, K. FISCHER, 1992. Specific heat of EuxSr1-xO near the ferromagnetic phase transition. In: Zeitschrift für Physik / B. 1992, 89(1), pp. 39-43. Available under: doi: 10.1007/BF01320827BibTex
@article{Stroka1992Speci-5356,
year={1992},
doi={10.1007/BF01320827},
title={Specific heat of EuxSr1-xO near the ferromagnetic phase transition},
number={1},
volume={89},
journal={Zeitschrift für Physik / B},
pages={39--43},
author={Stroka, B. and Wosnitza, Jochen and Scheer, Elke and Löhneysen, Hilbert von and Park, W. and Fischer, K.}
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<dcterms:abstract xml:lang="eng">High-resolution measurements of the specific heat, C, near the ferromagnetic phase transition of the diluted ferromagnetic system Eux Srl_xO are reported. Samples with four different concentrations (x = 1, x =0.9, x =0.7 and x =0.5) have been studied and the expected phase diagram, i.e. the linear decrease of T~ with decreasing x, is confirmed. Our specific-heat data of the pure EuO samples yield a critical exponent e = -0.12_+ 0.02 in contrast to literature results, but in agreement with the value expected theoretically for this three-dimensional Heisenberg system. The origin of the discrepancies is traced down to differences in data analysis.</dcterms:abstract>
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