Tetravalency and magnetic phase diagram in the heavy-fermion superconductor <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">UPd</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span><span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Al</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span>

A. Grauel; A. Böhm; H. Fischer; C. Geibel; R. Köhler; R. Modler; C. Schank; F. Steglich; G. Weber; T. Komatsubara; N. Sato

doi:10.1103/PhysRevB.46.5818

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Tetravalency and magnetic phase diagram in the heavy-fermion superconductor ${UPd}_{2}$ ${Al}_{3}$

A. Grauel, A. Böhm, H. Fischer, C. Geibel, R. Köhler, R. Modler, C. Schank, F. Steglich, and G. Weber

T. Komatsubara and N. Sato

Institut für Festkörperphysik, Technische Hochschule Darmstadt, W-6100 Darmstadt, Germany

Department of Physics, Faculty of Science, Tohoku University, Sendai 980, Japan

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Phys. Rev. B 46, 5818(R) – Published 1 September, 1992

DOI: https://doi.org/10.1103/PhysRevB.46.5818

Abstract

Measurements of the dc susceptibility χ(T), dc magnetization, magnetoresistivity, and magnetostriction are utilized to delineate the magnetic B-T phase diagram of the antiferromagnetically ordered ( $T_{N}$ =14 K) heavy-fermion superconductor ( $T_{c}$ =2 K) ${UPd}_{2}$ ${Al}_{3}$ . The single-crystal data reveal three antiferromagnetic phases for B⊥c, but only one for B∥c. The anisotropic χ(T) in the paramagnetic state suggests a tetravalent configuration of uranium.

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Physical Review B

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Tetravalency and magnetic phase diagram in the heavy-fermion superconductor ${UPd}_{2}$ ${Al}_{3}$

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Tetravalency and magnetic phase diagram in the heavy-fermion superconductor UPd2Al3

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Tetravalency and magnetic phase diagram in the heavy-fermion superconductor ${UPd}_{2}$ ${Al}_{3}$