Mn Valence, Magnetic, and Electrical Properties of LaMnO(3+δ) Nanofibers by Electrospinning.
Summary of "Mn Valence, Magnetic, and Electrical Properties of LaMnO(3+δ) Nanofibers by Electrospinning."
LaMnO(3+δ) nanofibers have been prepared by electrospinning. The nearly 70% of Mn atoms is Mn(4+), which is much higher than that in the nanoparticles. The average grain size of our fibers is approximately 20 nm, which is the critical size producing the nanoscale effect. The nanofibers exhibit a very broad magnetic transition with T(c) ≈ 255 K, and the T(c) onset is around 310 K. The blocking temperature T(B) is 180 K. The sample shows weak ferromagnetic property above the T(B) and below T(c) and superparamagnetic property near the T(c) onset. The resistivity measurements show a metal-insulator transition near 210 K and an upturn at about 45 K.
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China, School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun
This article was published in the following journal.
Name: ACS applied materials & interfaces
In order to develop new-type multifunctional composite nanofibers, Eu(BA)3 phen/PANI/PVP bifunctional composite nanofibers with simultaneous photoluminescence and electrical conductivity have been suc...
Magnetic mesoporous γ-Fe2O3@Ti0.9Si0.1O2 (abbreviated as Fe@TiSi) core-shell nanofibers were prepared using sol-gel chemistry combined with coaxial-electrospinning technology by adjusting the inner a...
Electrospinning is a simple unit operation process by which polymeric nanofibers with diameters ranging from a few nanometers to hundreds of micrometers can be fabricated using an electrostatically op...
Tissue-engineered skin substitutes such as nanofibers from traditional electrospinning may offer an effective therapeutic option for the treatment of patients suffering from skin damages such as burns...
Animal polysaccharides belong to a class of biological macromolecules. They are natural biopolymers with numerous advantages for biomedical applications, such as biocompatibility, biodegradability, no...
The purpose of this study is to determine whether the Vascular prosthesis manufactured by Electrospinning is safe with respect to the development of thrombosis.
The cardiac output (CO) is an important parameter in the diagnosis and therapy of cardiac diseases. The current standard methods for the determination of the CO, however, are either invasi...
We hope to understand the properties of the motor cortex in the brain of people with stroke using non-invasive magnetic stimulation.
This study will use transcranial magnetic stimulation to examine how the brain controls movement by sending messages to the spinal cord and muscles and what goes wrong with this process in...
This study will use transcranial magnetic stimulation (TMS) and electrical stimulation of nerves to examine how the brain controls muscle movement in focal hand dystonia (writer's cramp). ...
Medical and Biotech [MESH] Definitions
The electrical response evoked in a muscle or motor nerve by electrical or magnetic stimulation. Common methods of stimulation are by transcranial electrical and TRANSCRANIAL MAGNETIC STIMULATION. It is often used for monitoring during neurosurgery.
The electrical properties, characteristics of living organisms, and the processes of organisms or their parts that are involved in generating and responding to electrical charges.
A technique of measuring the dielectric properties of materials, which vary over a range of frequencies depending on the physical properties of the material. The technique involves measuring, over a range of frequencies, ELECTRICAL IMPEDANCE and phase shift of an electric field as it passes through the material.
Apparatus and instruments that generate and operate with ELECTRICITY, and their electrical components.
Submicron-sized fibers with diameters typically between 50 and 500 nanometers. The very small dimension of these fibers can generate a high surface area to volume ratio, which makes them potential candidates for various biomedical and other applications.