Structural and Magnetic Properties of Single Crystals of the Geometrically Frustrated Zirconium Pyrochlore, Pr2Zr2O7

Abstract

We report the growth of large high quality crystals of the frustrated magnet, Pr2Zr2O7 by the floating zone technique. Several crystals have been produced starting with varying levels of excess of Pr6O11 to compensate for the loss of Pr2O3 during the growth process. X-ray diffraction analysis of the crystals shows that the Pr composition in our crystals, as determined by the Pr site occupancy in the pyrochlore structure, is always slightly less than 1. Fits to the magnetic sus-ceptibility data below 10 K using a Curie-Weiss law reveal an antiferromagnetic coupling between the Pr moments, with an estimated Weiss temperature of ΘW = -2.5 K and an effective moment for the Pr3+ of μeff = 2.5 μB. Magnetization versus field measurements show a spin-ice like anisotropy.

9 pages, 6 figures

References in corpus (3)

• Magnetic Pyrochlore Oxides
• First-principles modeling of multferroic RMn${}_2$O${}_5$
• Tunneling Study of the Charge-Ordering Gap on the Surface of La${}_{0.350}$Pr${}_{0.275}$Ca${}_{0.375}$MnO${}_3$ Thin Films

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• Antiferro-quadrupolar correlations in the quantum spin ice candidate Pr2Zr2O7
• Structural and Magnetic Investigations of Single-Crystals of the Neodymium Zirconate Pyrochlore, Nd2Zr2O7
• Synthesis, floating zone crystal growth and characterization of the Quantum Spin Ice $\mathrm{P}{\mathrm{r}}_2\mathrm{Z}{\mathrm{r}}_2{\mathrm{O}}_7$ pyrochlore
• Single crystal growth, structure and magnetic properties of Pr2Hf2O7 pyrochlore
• Revisiting spin ice physics in the ferromagnetic Ising pyrochlore Pr${}_2$Sn${}_2$O${}_7$
• Integer vs. half-integer spin on an approximate honeycomb lattice
• Hearing the light: stray-field noise from the emergent photon in quantum spin ice