Muon spin rotation and neutron scattering investigations of the B-site ordered double perovskite Sr2DyRuO6

Abstract

The magnetic ground state of double perovskite Sr2DyRuO6 has been investigated using muon spin rotation and relaxation (muSR), neutron powder diffraction (NPD) and inelastic neutron scattering (INS), in addition to heat capacity and magnetic susceptibility (ac and dc) measurements. A clear signature of a long-range ordered magnetic ground state has been observed in the heat capacity data, which exhibit two sharp anomalies at 39.5 and 36 K found as well in the magnetic data. Further confirmation of long-range magnetic ordering comes from a sharp drop in the muon initial asymmetry and a peak in the relaxation rate at 40 K, along with a weak anomaly near 36 K. Based on temperature dependent NPD, the low temperature magnetic structure contains two interpenetrating lattices of Dy and Ru5, forming an antiferromagnetic ground state below 39.5 K with magnetic propagation vector k = (0,0,0). The magnetic moments of Dy and Ru at 3.5 K are pointing along the crystallographic b-axis with values of muDy = 4.92(10) muB and muRu = 1.94(7) muB, respectively. The temperature dependence of the Ru moments follows a mean field type behaviour, while that of the Dy moments exhibits a deviation indicating that the primary magnetic ordering is induced by the order of the 4d electrons of Ru rather than that of its proper 4f Dy electrons. The origin of the second anomaly observed in the heat capacity data at 36.5 K must be connected to a very small spin reorientation as the NPD studies do not reveal any clear change in the observed magnetic Bragg peaks positions or intensities between these two transitions. INS measurements reveal the presence of crystal field excitations (CEF) in the paramagnetic state with overall CEF splitting of 73.8 meV, in agreement with the point change model calculations.

arXiv comment25 pages, 14 figures

References in corpus (31)

• Mantid - Data Analysis and Visualization Package for Neutron Scattering and $\mu SR$ Experiments
• Spin Ice State in Frustrated Magnetic Pyrochlore Materials
• Quantum Spin Liquid States
• Electronic Structure of Sr_2FeMoO_6
• Spin-polarized muons in condensed matter physics
• Magnetic properties of the geometrically frustrated S=1/2 antiferromagnets, La2LiMoO6 and Ba2YMoO6, with the B-site ordered double perovskite structure: Evidence for a Collective Spin Singlet Ground State
• The Heisenberg antiferromagnet on the kagome lattice with arbitrary spin: A high-order coupled cluster treatment
• The frustrated FCC antiferromagnet Ba2YOsO6: structural characterization, magnetic properties and neutron scattering studies
• Theory of Half-Metallic Double Perovskites I: Double Exchange Mechanism
• Ferromagnetism above 1000 K in highly cation-ordered double-perovskite insulator Sr3OsO6
• Two-Dimensional Magnetic Correlations and Partial Long-Range Order in Geometrically Frustrated Sr2YRuO6
• Frustration by competing interactions in the highly-distorted double perovskites La2NaB'O6 (B' = Ru, Os)
• Spin-orbit coupling controlled ground state in Sr${}_2$ScOsO${}_6$
• Possible Half Metallic Antiferromagnetism in a Double Perovskite Material with Strong Spin-Orbit Couplings
• Highly-anisotropic exchange interactions of $j_{\mathrm{eff}}=1/2$ iridium moments on the fcc lattice in La${}_{2}B$IrO${}_6$ ($B$ $=$ Mg, Zn)
• Observation of magnetization reversal and negative magnetization in a double perovskite compound Sr2YbRuO6
• Quantum magnetic properties of the spin-1/2 triangular-lattice antiferromagnet Ba${}_2$La${}_2$CoTe${}_2$O${}_{12}$
• Exotic magnetism on the quasi-FCC lattices of the $d^3$ double perovskites La${}_2$NaB${}^{\prime }$O${}_6$ (B${}^{\prime }$ $=$ Ru, Os)
• Spin Gap and the Nature of the 4d3 Magnetic Ground State in the Frustrated FCC Antiferromagnet Ba2YRuO6
• A brief review on muSR studies of unconventional Fe and Cr-based superconductors
• Structural and metal-insulator transitions in rhenium based double perovskites via orbital ordering
• Origin of magnetic excitation gap in double perovskite Sr${}_2$FeOsO${}_6$
• Structural and magnetic properties of the 5$d^2$ double perovskites Sr${}_{2}B$ReO${}_6$ ($B$ $=$ Y, In)
• Exotic Magnetism and Spin-Orbit Assisted Mott Insulating State in a $3d-5d$ Double Perovskite
• Understanding the magnetism in noncentrosymmetric CeIrGe3: Muon spin relaxation and neutron scattering studies
• Magnetic structure driven by monoclinic distortions in the double perovskite Sr2YRuO6
• Exchange bias-like magnetic properties in Sr2LuRuO6
• Spin gaps in the ordered states of La${}_2$LiXO${}_6$ (X = Ru, Os) and their relation to distortion of the cubic double perovskite structure in 4$d^3$ and 5$d^3$ magnets
• Muon spin relaxation and neutron diffraction investigations of quadrupolar and magnetically ordered states of YbRu2Ge2
• First order valence transition: Neutron diffraction, inelastic neutron scattering and x-ray absorption investigations on the double perovskite Ba2PrRu0.9Ir0.1O6
• MuSR and neutron diffraction studies on the tuning of spin-glass phase in partially ordered double perovskite SrMn${}_{1-x}$W${}_x$O${}_3$

Cited by in corpus (6)

• Altermagnetism: Exploring New Frontiers in Magnetism and Spintronics
• Investigation of the magnetic ground state of the ordered double perovskite Sr2YbRuO6: a tale of two transitions
• Unconventional S-orbital state of Tb and cooperative Ru(4d)-Tb(4f) spin-ordering in strongly correlated 4d-4f system, Ba3TbRu2O9
• Large magnetodielectric coupling in the vicinity of metamagnetic transition in $6H-$perovskite Ba${}_3$GdRu${}_2$O${}_9$
• Quasiparticle Dynamics in the 4d-4f Ising-like Double Perovskite Ba2DyRuO6 studied using Neutron Scattering and Machine-Learning Framework
• Localized-delocalized crossover of spin-carriers and magnetization reversal in Co${}_2$VO${}_4$