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 and YbPd2P2 (with Yb +2 ) are non localmoment bearing, whereas CePd2P2 and PrPd2P2 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 Eu +2 ions and both EuPd2P2 and GdPd2P2 have isotropic paramagnetic susceptibilities consistent with L = 0 and J = S = 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 θc values and compared to theoretical trends across the rare earth series. The ordering temperatures as well as the polycrystalline averaged paramagnetic Curie-Weiss temperature, θave, were extracted from magnetization and resistivity measurements, and compared to the de-Gennes factor.

Pressure-induced suppression of ferromagnetism in CePd$_2$P$_2$

“…These papers also confirmed ferromagnetic order in CePd 2 P 2 below about 28.4 K. Neutron diffraction and DC magnetization measurements were performed by Ikeda et al [19] on a polycrystalline sample, including a magnetically aligned polycrystalline sample, which revealed the magnetic anisotropy of CePd 2 P 2 , with the c-axis as the magnetic easy axis. This is confirmed by single crystal work [20]. The compound CeNi 2 P 2 shares the ThCr 2 Si 2 crystal structure with CePd 2 P 2 , but exhibits a non-magnetic ground state [21], suggesting Pdto-Ni substitution can drive a transition from magnetic to non-magnetic.…”

Use of Refractory‐Volatile Element Deep Eutectic Regions to Grow Single Crystalline Intermetallic Compounds

“…Following this observation, we previously demonstrated that low‐melting metal‐sulfur mixtures could serve as powerful solvents for growing a variety of binary and ternary sulfide materials [10] . More recently, we used transition metal‐phosphorous melts to grow Fe 5 B 2 P, ZrMnP, HfMnP and RPd 2 P 2 out of TM‐P‐X self‐fluxes [27–29] …”

CRYSTAL STRUCTURE OF THE PHOSPHIDES RPd2P2 (R = Gd, Tb, Dy, AND Er)

“…Фосфіди складу RPd 2 P 2 , де R = Eu-Dy, мають парамагнітні властивості. Також відомо, що для сполуки CePd 2 P 2 властивий Кондо-ефект [19], а за низьких температур наявні феромагнітні впорядкування [20][21][22][23][24][25].…”