Efrain E. Rodriguez
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View article: Reversible structural and colorimetric transitions in LuMnGaO <sub>4</sub> upon oxygen uptake and release
Reversible structural and colorimetric transitions in LuMnGaO <sub>4</sub> upon oxygen uptake and release Open
We synthesized LuMnGaO 4 , an AB 2 O 4 -type compound, and performed structural analysis and characterization focusing on its reversible oxygen uptake and oxidation-driven color change.
View article: Evidence of ferrimagnetism in Fe <sub>3</sub> GaTe <sub>2</sub> <i>via</i> neutron diffraction studies
Evidence of ferrimagnetism in Fe <sub>3</sub> GaTe <sub>2</sub> <i>via</i> neutron diffraction studies Open
The van der Waals material Fe 3 GaTe 2 exhibits long-range ferrimagnetism above room temperature as evidenced by temperature dependent neutron diffraction.
View article: Coexistence of Commensurate and Incommensurate Antiferromagnetic Groundstates in Co$_x$NbSe$_2$ Single Crystal
Coexistence of Commensurate and Incommensurate Antiferromagnetic Groundstates in Co$_x$NbSe$_2$ Single Crystal Open
In Co$_x$NbSe$_2$, crystal symmetry, and cobalt site occupation drive the formation of two distinct magnetic phases. At $x = 1/4$, the centrosymmetric structure ($P$6$_3$/$mmc$) promotes Co-Co interactions leading to the formation of an $A…
View article: CCDC 2269325: Experimental Crystal Structure Determination
CCDC 2269325: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Multiscale characterizations of structural evolution in mesoporous CeO<sub>2</sub>
Multiscale characterizations of structural evolution in mesoporous CeO<sub>2</sub> Open
In situ ultra-small-angle and wide-angle X-ray scattering enables simultaneous tracking of the structural parameters of mesoporous CeO 2 from the atomic scale to the micron-size scale.
View article: Twisting two-dimensional iron sulfide layers into coincident site superlattices <i>via</i> intercalation chemistry
Twisting two-dimensional iron sulfide layers into coincident site superlattices <i>via</i> intercalation chemistry Open
TEM Electron diffraction analysis of twisted coincident site superstructures in intercalated tetragonal iron sulfide.
View article: Acoustic lattice instabilities at the magneto-structural transition in Fe$_{1.057(7)}$Te
Acoustic lattice instabilities at the magneto-structural transition in Fe$_{1.057(7)}$Te Open
Fe$_{1.057(7)}$Te undergoes a first-order tetragonal to monoclinc structural transition at T$_{S} \sim 70$ K, breaking the C$_{4}$ lattice symmetry and simultaneously breaking time reversal symmetry with bicollinear magnetic order. We inve…
View article: Structural modulation and spin glassiness upon oxidation in oxygen storage material <i>Ln</i>FeMnO4+x for <i>Ln</i> = Y, Lu, and Yb
Structural modulation and spin glassiness upon oxidation in oxygen storage material <i>Ln</i>FeMnO4+x for <i>Ln</i> = Y, Lu, and Yb Open
The mixed valence multiferroic LnFe2+Fe3+O4 (where Ln = Y, Lu, and Yb) can reversibly uptake oxygen into its lattice, which is evidenced by a crystallographic phase transition along with the appearance of structural modulations. In this st…
View article: ANDiE the Autonomous Neutron Diffraction Explorer
ANDiE the Autonomous Neutron Diffraction Explorer Open
Here, we developed the Autonomous Neutron Diffraction Explorer (ANDiE) to autonomously perform neutron diffraction measurements to discover the magnetic ordering behavior in a material. Neutron diffraction is one of the few techniques that…
View article: High reactivity of mesoporous CeO<sub>2</sub> to dissociate chemical warfare agent sarin
High reactivity of mesoporous CeO<sub>2</sub> to dissociate chemical warfare agent sarin Open
Spectroscopic surface characterization under exposure of sarin gas (also known as GB) as well as DFT modeling reveals the high reactivity of mesoporous ceria (CeO 2 ) towards sarin degradation.
View article: CCDC 2061546: Experimental Crystal Structure Determination
CCDC 2061546: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Machine learning modeling of superconducting critical temperature
Machine learning modeling of superconducting critical temperature Open
Superconductivity has been the focus of enormous research effort since its discovery more than a century ago. Yet, some features of this unique phenomenon remain poorly understood; prime among these is the connection between superconductiv…
View article: Tuning Magnetic Symmetry and Properties in the Olivine Series Li<sub>1–<i>x</i></sub>Fe<sub><i>x</i></sub>Mn<sub>1–<i>x</i></sub>PO<sub>4</sub> through Selective Delithiation
Tuning Magnetic Symmetry and Properties in the Olivine Series Li<sub>1–<i>x</i></sub>Fe<sub><i>x</i></sub>Mn<sub>1–<i>x</i></sub>PO<sub>4</sub> through Selective Delithiation Open
In this work, we present the first in-depth study of the nuclear and magnetic structures of the fully lithiated LiFexMn1–xPO4 solid solutions as well as the partially delithiated Li1–xFexMn1–xPO4 series using neutron powder diffraction. By…
View article: On-the-fly autonomous control of neutron diffraction via physics-informed Bayesian active learning
On-the-fly autonomous control of neutron diffraction via physics-informed Bayesian active learning Open
We demonstrate the first live, autonomous control over neutron diffraction experiments by developing and deploying ANDiE: the autonomous neutron diffraction explorer. Neutron scattering is a unique and versatile characterization technique …
View article: Crystal field-induced lattice expansion upon reversible oxygen uptake/release in YbMn<sub><i>x</i></sub>Fe<sub>2−<i>x</i></sub>O<sub>4</sub>
Crystal field-induced lattice expansion upon reversible oxygen uptake/release in YbMn<sub><i>x</i></sub>Fe<sub>2−<i>x</i></sub>O<sub>4</sub> Open
The mechanism for oxygen release and uptake is influenced by crystal field effects in the solid solution YbMn x Fe 2− x O 4 .
View article: Understanding Dimethyl Methylphosphonate Adsorption and Decomposition on Mesoporous CeO<sub>2</sub>
Understanding Dimethyl Methylphosphonate Adsorption and Decomposition on Mesoporous CeO<sub>2</sub> Open
The increased risk of chemical warfare agent usage around the world has intensified the search for high-surface-area materials that can strongly adsorb and actively decompose chemical warfare agents. Dimethyl methylphosphonate (DMMP) is a …
View article: Internet of things application for smart construction assets
Internet of things application for smart construction assets Open
Internet of things (IoT) devices allow data to be communicated efficiently using low power to a central server to report location, movement, temperature and environmental attributes. With improvements in device connectivity distance, impro…
View article: Centers of spatial and time inversion symmetry in magnetoelectric crystalline materials
Centers of spatial and time inversion symmetry in magnetoelectric crystalline materials Open
Just as atomic structure dictates the properties of crystalline materials, the behavior of magnetic materials are dictated by their magnetic structure.Over the past several years we have researched antiferromagnetic materials in which the …
View article: Crystallography of lithiated and delithiated transition metal phosphates and thiophosphates
Crystallography of lithiated and delithiated transition metal phosphates and thiophosphates Open
Lithium transition metal phosphates and thiophosphates have been utilized in an endless amount of applications.The phosphates have been studied in magnetoelectrics, batteries, and quantum materials.We are specifically studying the phosphat…
View article: CSD 2068885: Experimental Crystal Structure Determination
CSD 2068885: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 2068884: Experimental Crystal Structure Determination
CSD 2068884: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Orbital Contribution to Paramagnetism and Noninnocent Thiophosphate Anions in Layered Li<sub>2</sub>MP<sub>2</sub>S<sub>6</sub> Where M = Fe and Co
Orbital Contribution to Paramagnetism and Noninnocent Thiophosphate Anions in Layered Li<sub>2</sub>MP<sub>2</sub>S<sub>6</sub> Where M = Fe and Co Open
Transition-metal thiophosphates and selenophosphates are layered systems with the potential for displaying two-dimensional (2D) magnetic phenomena. We present the crystal structures and magnetic properties of two lithium transition-metal t…
View article: CCDC 2062185: Experimental Crystal Structure Determination
CCDC 2062185: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2062183: Experimental Crystal Structure Determination
CCDC 2062183: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …