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Fast broadband cluster spin-glass dynamics in PbFeNbO
C. Stock, B. Roessli, P. M. Gehring +11
PbFeNbO (PFN) is a relaxor ferroelectric (T 400 K) consisting of disordered magnetic Fe (S=, L0) ions resulting in a l…
A Semi-Supervised Approach for Automatic Crystal Structure Classification
Satvik Lolla, Haotong Liang, A. Gilad Kusne +2
The structural solution problem can be a daunting and time consuming task. Especially in the presence of impurity phases, current methods such as indexing become more unstable. In…
On-the-fly Autonomous Control of Neutron Diffraction via Physics-Informed Bayesian Active Learning
Austin McDannald, Matthias Frontzek, Andrei T. Savici +8
Neutron scattering is a unique and versatile characterization technique for probing the magnetic structure and dynamics of materials. However, instruments at neutron scattering fac…
Common acoustic phonon lifetimes in inorganic and hybrid lead halide perovskites
M. Songvilay, N. Giles-Donovan, M. Bari +12
The acoustic phonons in the organic-inorganic lead halide perovskites have been reported to have anomalously short lifetimes over a large part of the Brillouin zone. The resulting…
Quantum oscillations from networked topological interfaces in a Weyl semimetal
I-Lin Liu, Colin Heikes, Taner Yildirim +6
Layered transition metal chalcogenides are promising hosts of electronic Weyl nodes and topological superconductivity. MoTe is a striking example that harbors both noncentrosym…
A high-energy density antiferroelectric made by interfacial electrostatic engineering
Julia A. Mundy, Colin A. Heikes, Bastien F. Grosso +11
Dielectric capacitors hold a tremendous advantage for energy storage due to their fast charge/discharge times and stability in comparison to batteries and supercapacitors. A key li…
Spin scattering and noncollinear spin structure-induced intrinsic anomalous Hall effect in antiferromagnetic topological insulator
Seng Huat Lee, Yanglin Zhu, Yu Wang +8
has recently been established as an intrinsic antiferromagnetic (AFM) topological insulator and predicted to be an ideal platform to realize quantum anomalous…
Pressure Tuning of Collapse of Helimagnetic Structure in AuMn
I-Lin Liu, Maria J. Pascale, Juscelino B. Leao +4
We identify the phase boundary between spiral spin and ferromagnetic phases in AuMn at a critical pressure of 16.4 kbar, as determined by neutron diffraction, magnetization and…
Structural and Magnetic Phase Transitions in Chromium Nitride Thin Films Grown by RF Nitrogen Plasma Molecular Beam Epitaxy
Khan Alam, Steven M. Disseler, William D. Ratcliff +8
A magneto-structural phase transition is investigated in single crystal CrN thin films grown by rf plasma molecular beam epitaxy on MgO(001) substrates. While still within the vacu…
Successive field-induced transitions in BiFeO around room temperature
Shiro Kawachi, Atsushi Miyake, Toshimitsu Ito +8
The effects of high magnetic fields applied perpendicular to the spontaneous ferroelectric polarization on single crystals of BiFeO were investigated through magnetization, mag…
Electric-field Induced Reversible Switching of the Magnetic Easy-axis in Co/BiFeO3/SrRuO3/SrTiO3 Heterostructures
T. R. Gao, X. H. Zhang, W. Ratcliff +8
Electric-field (E-field) control of magnetism enabled by multiferroics has the potential to revolutionize the landscape of present memory devices plagued with high energy dissipati…
Change in the magnetic structure of (Bi,Sm)FeO3 thin films at the morphotropic phase boundary probed by neutron diffraction
Shingo Maruyama, Varatharajan Anbusathaiah, Amy Fennell +3
We report on the evolution of the magnetic structure of BiFeO3 thin films grown on SrTiO3 substrates as a function of Sm doping. We determined the magnetic structure using neutron…
Magnetic Structure of Hexagonal Mn-doped LuFeO
Steven M. Disseler, Xuan Luo, Yoon Seok Oh +6
Neutron scattering techniques are used to investigate the crystalline and magnetic structure of LuFeMnO in bulk polycrystalline form. We find that the cryst…
Nitrogen Contamination in Elastic Neutron Scattering
Songxue Chi, Jeffrey W. Lynn, Ying Chen +6
Nitrogen gas accidentally sealed in a sample container produces various spurious effects in elastic neutron scattering measurements. These effects are systematically investigated a…