U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Craig Brown (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 26 - 50 of 309

Lattice Dynamics in the NASICON NaZr 2 (PO 4 ) 3 Solid Electrolyte from Temperature-Dependent Neutron Diffraction, NMR, and Ab Initio Computational Studies

May 10, 2022
Author(s)
Emily Morgan, Hayden Evans, Kartik Pilar, Craig Brown, Raphaele Clement, Ryo Maezono, Ram Seshadri, Bartomeu Monserrat, Anthony Cheetham
Natrium super ionic conductor (NASICON) compounds form a rich and highly chemically-tunable family of crystalline materials that are of widespread interest because they include exemplars with high ionic conductivity, low thermal expansion, and redox

Magnetic-Field-Induced Dielectric Anomalies in Cobalt-Containing Garnets

April 11, 2022
Author(s)
Abbey J. Neer, Joanna Milam-Guerrero, Veronika A. Fischer, Michelle Zheng, Nicole R. Spence, Clayton Cozzan, Mingqiang Gu, James M. Rondinelli, Craig Brown, Brent C. Melot
We present a comparative study of the magnetic and crystal chemical proper-ties of two Co 2+ containing garnets.CaY 2Co 2Ge 3O 12 and NaCa 2Co 2V 3O 12 both exhibit the onset of antiferromagnetic order at 8 K and 6 K as well as field-induced transitions

Stacking Faults Assist Lithium-Ion Conduction in a Halide-Based Superionic Conductor

April 6, 2022
Author(s)
Elias Sebti, Hayden Evans, Hengning Chen, Peter Richardson, Kelly White, Raynald Giovine, Krishna P. Koirala, Yaobin Xu, Eliovardo Gonzalez-Correa, Chongmin Wang, Craig Brown, Anthony Cheetham, Pieremanuele Canepa, Raphaele Clement
In the pursuit of urgently-needed, energy dense solid-state batteries for electric vehicle and portable electronics applications, halide solid electrolytes offer a promising path forward with exceptional compatibility against high-voltage oxide electrodes

Probing the non-classical dihydrogen ligand in OsClH3(PPh3)3 using X-ray and neutron diffraction, inelastic neutron scattering, and theoretical calculations

February 15, 2022
Author(s)
Carly Carter, Ryan Klein, Wei Zhou, Terrence J. Udovic, Craig Brown, Ting-Bin Wen, Thomas Cundari, Muhammed Yousufuddin
: Dihydrogen ligation to metal centers results in a wide range of metal-hydrogen interactions. Compounds containing non-classical dihydrogen ligands in which the H–H contacts are significantly longer than the 0.74 Å distance found in solid H2 are

Neutron vibrational spectroscopic evidence for short H???H contacts in the RNiInH1.4; 1.6 (R = Ce, La) metal hydride

February 1, 2022
Author(s)
Ryan Klein, Rafael Balderas-Xicohtencatl, Jan Petter Maehlen, Terrence J. Udovic, Craig Brown, Robert Delaplane, Yongqiang Cheng, Roman Denys, Anibal Ramirez Cuesta, Volodymyr Yartys
Intermetallic metal hydrides are critical materials for hydrogen storage applications, however, metal hydrides with greater storage capacities are still needed. Within metal hydrides, the volumetric storage capacities are limited by the number of hydrogen

Physical Properties of the Quasi-Two-Dimensional Square Lattice Antiferromagnet Ba 2 FeSi 2 O 7

December 28, 2021
Author(s)
Tae-Hwan Jang, Seung-Hwan Do, Minseong Lee, Hui Wu, Craig Brown, Andrew D. Christianson, Sang-Wook Cheong, Jae-Hoon Park
We report magnetization (χ, M), magnetic specific heat (CM), and neutron powder diffraction results on a quasi-two-dimensional (2D) S = 2 square lattice antiferromagnet Ba 2FeSi 2O 7 consisting of FeO 4 tetrahedrons with highly compressive tetragonal

Iridate Li 8 IrO 6 : An Antiferromagnetic Insulator

November 15, 2021
Author(s)
Callista M. Skaggs, Peter E. Siegfried, Chang-Jong Kang, Craig Brown, Fu Chen, Lu Ma, Steven N. Ehrlich, Yan Xin, Mark Croft, Wenqian Xu, Saul H. Lapidus, Nirmal J. Ghimire, Xiaoyan Tan
A poltcrystalline iridate, Li 8IrO 6, material was prepared via heating Li 2O and IrO 2 starting materials in a sealed quartz tube at 650 °C for 48 hours. The structure was determined from Rietveld refinement of room temperature powder neutron diffraction

Magnetic Properties and Signatures of Ordering in Triangular Lattice Antiferromagnet KCeO 2

September 15, 2021
Author(s)
Mitchell M. Bordelon, Xiaoling Wang, Daniel M. Pajerowski, Arnab Banerjee, Mark Sherwin, Craig Brown, M. Eldeeb, T. Petersen, L. Hozoi, U. Robler, Martin Mourigal
The magnetic ground state and the crystalline electric field level scheme of the triangular lattice antiferromagnet KCeO 2are investigated. Below T N = 300 mK, KCeO 2 develops signatures of magnetic order in specific heat measurements and low energy

Neutron Scattering Studies of Materials for Hydrogen Storage

August 28, 2021
Author(s)
Ryan Klein, Hayden Evans, Benjamin Trump, Terrence J. Udovic, Craig Brown
Hydrogen storage presents a significant barrier to the widespread adaptation of hydrogen as an energy source in mobile and stationary applications. The development of new candidate hydrogen storage materials is therefore an outstanding goal in the field of

Enhanced Magnetic Interaction by Face-Shared Hydride Anions in 6H-BaCrO 2 H

August 16, 2021
Author(s)
Kentaro Higashi, Masayuki Ochi, Yusuke Nambu, Takafumi Yamamoto, Taito Murakami, Naoya Yamashina, Cedric Tassel, Yuki Matsumoto, Hiroshi Takatsu, Craig Brown, Hiroshi Kageyama
Studies on magnetic oxyhydrides have been almost limited to perovskite-based lattices with corner-sharing octahedra with a M‒H‒M (M: transition metal) angle of θ 180 °. Using a high-pressure method, we prepared BaCrO 2H with a 6H-type hexagonal perovskite

Spin Reorientation in Antiferromagnetic Layered FePt5P

July 30, 2021
Author(s)
Xin Gui, Madalynn Marshall, Ranuri Dissanayaka Mudiyanselage, Ryan Klein, Qiang Chen, Qiang Zhang, William Shelton, Haidong Zhou, Craig Brown, Huibo Cao, Martha Greenblatt, Weiwei Xie
FePt5P, a new substitutional variant of the CeCoIn5 structure type in space group P4/mmm, was synthesized by high-temperature solid-state method and structurally characterized by X-ray diffraction. FePt5P contains layers of FePt12 clusters formed by

Antiferromagnetic Order and Spin-Canting Transition in the Corrugated Square Net Compound Cu 3 (TeO 4 )(SO 4 ):H 2 O

July 19, 2021
Author(s)
Zhi-Cheng Wang, Kulatheepan Thanabalasingam, Jan P. Scheifers, Alenna Streeter, Gregory T. McCandless, Jonathan N. Gaudet, Craig Brown, Carlo U. Segre, Julia Y. Chan, Fazel Tafti
Strongly correlated electrons in layered perovskite structures have been the birthplace of high-temperature superconductivity, spin liquid, and quantum criticality. Specifically, the cuprate materials with layered structures made of corner sharing square