Magnetic Pair Distribution Function Data Using Polarized Neutrons and ad hoc Corrections

Abstract

We report the first example of magnetic pair distribution function (mPDF) data obtained through use of neutron polarization analysis. Using the antiferromagnetic semiconductor MnTe as a test case, we present high-quality mPDF data collected on the HYSPEC instrument at the Spallation Neutron Source using longitudinal polarization analysis to isolate the magnetic scattering cross section. Clean mPDF patterns are obtained for MnTe in both the magnetically ordered state and the correlated paramagnet state, where only short-range magnetic order is present. We also demonstrate significant improvement in the quality of high-resolution mPDF data through application of ad hoc corrections that require only minimal human input, minimizing potential sources of error in the data processing procedure. We briefly discuss the current limitations and future outlook of mPDF analysis using polarized neutrons. Overall, this work provides a useful benchmark for mPDF analysis using polarized neutrons and provides an encouraging picture of the potential for routine collection of high-quality mPDF data.

References in corpus (7)

• PDFgetX3: A rapid and highly automatable program for processing powder diffraction data into total scattering pair distribution functions
• Magnetic structure determination from the magnetic pair distribution function (mPDF): ground state of MnO
• Local atomic and magnetic structure of dilute magnetic semiconductor (Ba,K)(Zn,Mn)${}_2$As${}_2$
• Neutron scattering investigation of proposed Kosterlitz-Thouless transitions in the triangular-lattice Ising antiferromagnet TmMgGaO4
• Real-space investigation of short-range magnetic correlations in fluoride pyrochlores NaCaCo${}_2$F${}_7$ and NaSrCo${}_2$F${}_7$ with magnetic pair distribution function analysis
• DIFFPY.MPDF: Open-source software for magnetic pair distribution function analysis
• Nanoscale degeneracy lifting in a geometrically frustrated antiferromagnet

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• A New Spin on Material Properties: Local Magnetic Structure in Functional and Quantum Materials
• Quantitative investigation of the short-range magnetic correlations in candidate quantum spin liquid NaYbO${}_2$
• Cluster spin glass correlations and dynamics in Zn${}_{0.5}$Mn${}_{0.5}$Te