Title: Magnetization and transport properties of single crystalline RPd₂P₂ (R=Y, La–Nd, Sm–Ho, Yb)

Abstract

Single crystals of RPd₂P₂ (R=Y, La–Nd, Sm–Ho, Yb) were grown out of a high temperature solution rich in Pd and P and characterized by room-temperature powder X-ray diffraction, anisotropic temperature- and field-dependent magnetization and temperature-dependent in-plane resistivity measurements. In this series, YPd₂P₂ and LaPd₂P₂ YbPd₂P₂ (with Yb²⁺) are non-local-moment bearing. Furthermore, YPd₂P₂ and LaPd₂P₂ are found to be superconducting with Tc≃0.75 and 0.96 K respectively. CePd₂P₂ and PrPd₂P₂ magnetically order at low temperature with a ferromagnetic component along the crystallographic c-axis. The rest of the series manifest low temperature antiferromagnetic ordering. EuPd₂P₂ has Eu²⁺ ions and both EuPd₂P₂ and GdPd₂P₂ have isotropic paramagnetic susceptibilities consistent with L =0 and J=S= $$\frac{7}{2}$$ and exhibit multiple magnetic transitions. For R=Eu–Dy, there are multiple, T>1.8 K transitions in zero applied magnetic field and for R=Nd, Eu, Gd, Tb, and Dy there are clear metamagnetic transitions at T=2.0 K for H< 55 kOe. Strong anisotropies arising mostly from crystal electric field (CEF) effects were observed for most magnetic rare earths with L≠0. The experimentally estimated CEF parameters B$$_2^0$$ were calculated from the anisotropic paramagnetic θ_ab and θ_c values and compared to theoretical trends across the rare earth series. Lastly, the ordering temperatures as well as the polycrystalline averaged paramagnetic Curie–Weiss temperature, θ_ave, were extracted from magnetization and resistivity measurements, and compared to the de-Gennes factor.

Authors:

Drachuck, Gil ^[1]; Böhmer, Anna E. ^[1]; Bud'ko, Sergey L. ^[1]; Canfield, Paul C. ^[1]

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+ Show Author Affiliations

1. Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy; Ames Lab. and Iowa State Univ., Ames, IA (United States)

Publication Date:

Fri May 27 00:00:00 EDT 2016

Research Org.:

Ames Lab., Ames, IA (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:

1326832

Alternate Identifier(s):

OSTI ID: 1328468

Report Number(s):

IS-J-9058
Journal ID: ISSN 0304-8853; PII: S0304885316308204

Grant/Contract Number:  

AC02-07CH11358; AC02–07CH111358

Resource Type:

Accepted Manuscript

Journal Name:

Journal of Magnetism and Magnetic Materials

Additional Journal Information:

Journal Volume: 417; Journal Issue: C; Journal ID: ISSN 0304-8853

Publisher:

Elsevier

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; Rare-earth compound; Single crystal; Magnetization; Resistivity; Metamagnetic transition; Superconductivity