Single crystal neutron diffraction, inelastic neutron scattering, and electron spin resonance experiments are used to study the magnetic structure and spin waves in PbVO(PO), a prototypical layered 12 ferromagnet with frustrating next-nearest neighbor antiferromagnetic interactions. The observed excitation spectrum is found to be inconsistent with a simple square lattice model previously proposed for this material. At least four distinct exchange coupling constants are required to reproduce the measured spin wave dispersion. The degree of magnetic frustration is correspondingly revised and found to be substantially smaller than in all previous estimates.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7047833 | PMC |
| http://dx.doi.org/10.1103/physrevb.99.184437 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Structural basis for human NKCC1 inhibition by loop diuretic drugs.
EMBO J
January 2025
Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, 84112-5650, USA.
Na-K-Cl cotransporters functions as an anion importers, regulating trans-epithelial chloride secretion, cell volume, and renal salt reabsorption. Loop diuretics, including furosemide, bumetanide, and torsemide, antagonize both NKCC1 and NKCC2, and are first-line medicines for the treatment of edema and hypertension. NKCC1 activation by the molecular crowding sensing WNK kinases is critical if cells are to combat shrinkage during hypertonic stress; however, how phosphorylation accelerates NKCC1 ion transport remains unclear.
View Article and Find Full Text PDFFast-Charging Lithium-Ion Batteries Enabled by Magnetically Aligned Electrodes.
ACS Nano
January 2025
Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States.
With the increasing popularity of electric transportation over the past several years, fast-charging lithium-ion batteries are highly demanded for shortening electric vehicles' charging time. Extensive efforts have been made on material development and electrode engineering; however, few of them are scalable and cost-effective enough to be potentially incorporated into the current battery production. Here, we propose a facile magnetic templating method for preparing LiFePO (LFP) cathodes with vertically aligned graphene sheets to realize fast-charging properties at a practical loading of 20 mg cm.
View Article and Find Full Text PDFMigraine and ergot use increase plasma pentraxin 3 levels: an Egyptian study.
Neurol Res
January 2025
Neurology Department, Faculty of Medicine, Cairo University, Giza, Cairo, Egypt.
Background: Endothelial dysfunction and inflammation are linked to migraine, which may contribute to atherogenesis and increase the risk of ischemia. In migraineurs, preclinical vascular involvement manifested as compromised structural characteristics of vessel wall has not received enough attention or evaluation.
Objectives: To measure plasma pentraxin 3 as an indicator of endothelial dysfunction in migraine in comparison to controls and to examine its correlation with clinical characteristics, headache severity, and brain magnetic resonance imaging findings.
Enhancing strategies of MOFs-derived materials for microwave absorption: review and perspective.
Adv Colloid Interface Sci
January 2025
State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China; Zhejiang-Russia Joint Laboratory of Photo-Electro-Magnetic Functional Materials, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China.
Microwave absorption materials (MAMs) gradually exhibit crucial applications in reducing electromagnetic wave (EMW) pollution, avoiding EMW information leakage, and solving radar stealth. Metal-organic frameworks (MOFs)-derived materials are flourishing in the domain of EMW absorption attributed to their especial structures, heteroatom doping and controllable components. Herein, various strategies to enhance the EMW absorption ability of MOFs-derived materials are outlined, covering structural design and compositional regulation.
View Article and Find Full Text PDFThe relationship between optical coherence tomography and magnetic resonance imaging measurements in people with multiple sclerosis: A systematic review and meta-analysis.
J Neurol Sci
January 2025
Department of Neurology, Jacobs Comprehensive MS Treatment and Research Center, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, NY, USA.
Background: Several studies show that optical coherence tomography (OCT) metrics e with cognition, disability, and brain structure in people with multiple sclerosis (PwMS). This review the correlation between OCT parameters and magnetic resonance imaging (MRI) measurements in PwMS.
Methods: A comprehensive search of PubMed/MEDLINE, Embase, Scopus, and Web of Science was performed, including studies published in English up to November 29, 2024 to identify studies reporting quantitative data on the correlation between baseline OCT parameters and MRI measurements in PwMS.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!