Search results for "magnetism."

Manipulation of antiferromagnetic domain distribution in Mn2 Au by ultrahigh magnetic fields and by strain

2017

Evidence for a spin reorientation in antiferromagnetic (AFM) Mn2Au thin films induced by high magnetic fields as well as by the application of in-plane mechanical stress is provided. The AFM domain population in the samples was investigated by resonant X-ray Magnetic Linear Dichroism (XMLD) measurements at the L3 edge of Mn using a variable linear polarization of the incident photon beam. As grown samples show no XMLD signal due to averaging over a random AFM domain distribution. After the exposure to a 70 T in-plane magnetic field a clear XMLD signal indicating the generation of a preferential AFM domain orientation is obtained. The same type of XMLD signal is observed when the thin films …

Electronic and magnetic structure ofLa0.875Sr0.125MnO3calculated by means of hybrid density-functional theory

2007

We present the results of ab initio calculations on magnetic and electronic structures of La1�xSrxMnO3 at low doping, x =1/8. Using the B3LYP hybrid exchange-correlation functional within the framework of densityfunctional theory, we predict a ferromagnetic ground state for La0.875Sr0.125MnO3 in both the low-temperature orthorhombic and the high-temperature pseudocubic phases. This is in contrast to its parent compound LaMnO3, for which we find in agreement with experiment the layered antiferromagnetic state to be the most stable one. The calculated density of states and bond population analysis suggest a tendency of formation of half-metallic spin states in the band gap of both structures.

Electromagnetic scattering solutions for digital signal processing

2010

Demo 19. Funcionamiento de un timbre

2013

Objetivo: Entender el funcionamiento de un timbre.

Demo 33. Inducción electromagnética y el transformador

2013

Objetivo: 1.- Observar fenómenos de inducción mediante elementos móviles. 2.- Observar fenómenos de inducción mediante corrientes variables con el tiempo. 3.- Establecer la estructura de un transformador de eléctrico.

Demo 25. Movimiento de electrones en campos E y B: el ciclotrón

2013

Objetivo:1.- Observar el proceso de generación de cargas libres. 2.- Observar el movimiento de cargas en campos eléctricos y magnéticos. Estudio experimental del movimiento de electrones en un campo magnético uniforme. Demostración de la Fuerza de Lorentz sobre electrones mediante la observación y medida de la trayectoria circular generada en un campo magnético uniforme, habiendo acelerado previamente los electrones con un campo eléctrico. Medida de la relación carga/masa de los electrones.

Ocular gelling microspheres: in vitro precorneal retention time and drug permeation through reconstituted corneal epithelium.

2008

Purpose: The model drug norfloxacin (NOR)was encapsulated into trehalose (TRH) and hydroxyethylcellulose(NAT) microspheres to obtain a novel gelling ophthalmic delivery system for prolonged release on corneal tissue. Methods: We assessed NOR release from microspheres, prepared by the emulsion-solvent evaporation method. A new in vitro tear turnover model, including inserts containing reconstituted human corneal epithelium (RHC), was designed to evaluate the TRH/NAT microspheres’ precorneal retention time. Bioadhesive properties of TRH/NAT microspheres were validated by using drug-loaded microspheres prepared with gelatine (GLT) commonly used as reference material in adhesion studies. Result…

Demo 89. Acelerador magnético o de Gauss

2013

Objetivo: Entender un fenómeno de aparente no conservación de la energía y momento lineal. Profundizar en el concepto de energía de ligadura y energía interna y su relación con la energía cinética.

Magnetometry in Environmental Sciences : Studying Environmental Structure Changes and Environmental Pollution

2018

Los estereotipos del magnetizador e hipnotizador en la literatura inglesa de ficción del siglo XIX

2020

The thesis "Stereotypes of the magnetizer and hypnotist in English fiction literature of the 19th Century" is made up of three research papers. In the first paper, entitled "The picture of Animal Magnetism in Fiction Literature: The Cases of Poe, Doyle, and Du Maurier," I discuss the following texts: The Facts in the Case of M.Valdemar (1845) by Edgar Allan Poe, The Great Keinplatz Experiment (1885) by Arthur Conan Doyle and Trilby (1894) by George Du Maurier. Thus, the case of Poe serves to present the historical overview of the diffusion and reception of animal magnetism in the United States, that of Doyle for the German case and that of Du Maurier for the British case. After these brief …