Low-temperature electrical resistivity of praseodymium at pressures up to 120 GPa

Hamlin, J. J.; Jeffries, J. R.; Samudrala, Gopi K.; Vohra, Yogesh K.; Weir, Samuel T.; Zocco, D. A.; Maple, M. B.

doi:10.1103/physrevb.84.033101

Cited by 7 publications

(4 citation statements)

References 47 publications

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“…At 30 GPa and 35 GPa the lowest temperature was extended to 2.5 K and 1.5 K, respectively. No evidence for superconductivity in Pr was found in any measurement, consistent with the results from previous experiments [14,16]. Further details of the non-hydrostatic pressure technique are given elsewhere [23].…”

Section: Experimental Methodssupporting

confidence: 88%

“…In the pressure range 30-48 GPa R(T) in gure 2 exhibits the modest negative curvature typical for metals, such as the transition metals or some lanthanides, with signi cant delectron character in the conduction band. An inspection of the data of Hamlin et al [16] to 120 GPa reveals that the gradual suppression of the R(T)-dependence seen in gure 2 between 30 GPa and 48 GPa continues to pressures as high as 120 GPa, all in the α-U structure.…”

Section: Resultsmentioning

confidence: 90%

“…Previous high-pressure resistivity studies on Pr have either been restricted to relatively narrow regions of pressure (9.8-22.6 GPa) [14], (21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32) [15]) or to a few values of pressure over a wide pressure range (22-120 GPa) [16]. In these studies it is dif cult to systematically track the evolution of the magnetic properties in the resistivity over a wide pressure range beginning near ambient pressure.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Magnetic ordering at anomalously high temperatures in selected lanthanides: what about Pr?

Song

Schilling

2020

J. Phys.: Condens. Matter

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Recent experiments have given evidence that for elemental Nd, Tb, and Dy the application of suf cient pressure pushes their magnetic ordering temperatures to anomalously high values. Pr metal has a dhcp structure and is trivalent with the 4f 2 con guration. Its singlet ground state suppresses magnetic order from the 15 K anticipated from de Gennes scaling to 50 mK. Four-point electrical resistivity measurements were carried out on Pr for temperatures 1.5-295 K under pressures to 48 GPa. Although no clear evidence for magnetic order (or superconductivity) is observed above 1.5 K, the temperature dependence of the resistivity gives evidence that Pr may enter a dense Kondo state above 10 GPa.

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Section: Experimental Methodssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic ordering at anomalously high temperatures in selected lanthanides: what about Pr?

Song

Schilling

2020

J. Phys.: Condens. Matter

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“…Diffraction studies under the same P-T conditions are now needed to determine whether this is the case. The existence of a low-temperature structure that does not have the oC4 structure will be important for interpreting previous low-temperature resistivity and superconductivity measurements [48,49].…”

Section: Electronic Structure Calculationsmentioning

confidence: 99%

High-pressure structure of praseodymium revisited: In search of a uniform structural phase sequence for the lanthanide elements

et al. 2022

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Angle-dispersive x-ray powder diffraction experiments have been performed on praseodymium metal to a pressure of 205 GPa. Between 20 and 165 GPa only the oC4 (α-uranium) phase is observed, in agreement with previous studies. At 171(5) GPa we find a transition to a tetragonal tI2 phase which is isostructural with the high-pressure post-oC4 phase seen in the neighboring lanthanide cerium above 12 GPa, and with the highpressure phase of the actinide thorium seen above 100 GPa. Electronic structure calculations determine the oC4 → tI2 transition to occur at 130 GPa at 0 K, but find another phase, with the hP1 (simple hexagonal) structure, to have a lower enthalpy than both the oC4 and tI2 structures above 20 GPa at 0 K.

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Theoretical and Molecular Dynamics Simulation Approaches to Praseodymium Content Effect on Radiation Shielding and Time Dependent Volume‐Collapse for a Newly Produced Borate Glass

Aygün,

Celik

et al. 2024

Advcd Theory and Sims

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Gamma‐ray, fast neutron and charged particle shielding characteristics of Praseodymium (Pr3+) activated glasses with composition 10ZnF2‐(10‐x)SrO‐15Li2O‐65H3BO3‐xPr2O3(where x = 0.1, 0.5, 1.0, 1.5, and 2.0) are investigated. For this, the radiation shielding parameters are estimated by using Photon Shielding and Dosimetry (Phy‐X/PSD), Interaction of Proton, Alpha, Gamma rays, Electrons, and X‐rays with matter (PAGEX), Stopping Powers and Ranges for Electrons (ESTAR), and The Stopping and Range of Ions in Matter (SRIM) codes. Furthermore, the results are compared comprehensively and comparatively. The glasses with increasing Pr3+ content exhibited higher shielding potential. It can be said that the ZFLHBPr2.0 sample could be used as a shielding material in various applied fields. Additionally, the effect of Pr composition on structural transitions and time‐dependent volume‐collapse of this new family of borate glass doped with Pr is analyzed by molecular dynamics study (MD) based density functional tight binding method. The simulation results show that the addition of Pr led to the cubic‐orthorhombic transformation of simulation cell at determined temperature and 1 atm pressure. Also, a sudden decrease in volume are observed within a short time at 8% Pr composition (x = 2.0) atmospheric pressure. This result provides a strong connection between Pr composition and volume change with time and at constant low pressure.

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Low-temperature electrical resistivity of praseodymium at pressures up to 120 GPa

Cited by 7 publications

References 47 publications

Magnetic ordering at anomalously high temperatures in selected lanthanides: what about Pr?

Magnetic ordering at anomalously high temperatures in selected lanthanides: what about Pr?

High-pressure structure of praseodymium revisited: In search of a uniform structural phase sequence for the lanthanide elements

Theoretical and Molecular Dynamics Simulation Approaches to Praseodymium Content Effect on Radiation Shielding and Time Dependent Volume‐Collapse for a Newly Produced Borate Glass

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