1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia

Opción 1: Descargar recurso

Detalles del recurso


Amorphous alloys of composition FexPd80-xP20 (13 ≤ x ≤ 44) have been prepared by rapid quenching from the liquid state. The Mössbauer effect in Fe57 has been used to study the magnetic properties of these materials. The hyperfine field distributions have been determined from these experiments, as a function of composition and temperature. The results indicate that the electronic state of Fe in these alloys remains essentially constant throughout the composition range, and that the Pd d band is filled by electron transfer from phosphorus.

The variation of the magnetic transition temperature with composition has been determined by combining the Mössbauer effect results with complementary magnetic measurements. There is a sharp change in the slope in this curve at x ≃ 26. Below this concentration, the long range magnetic order which prevails in the higher Fe concentration alloys has broken down, giving rise to a more local ordering.

The Mössbauer effect results confirm the existence of weakly coupled Fe atoms in all the amorphous Fe-Pd-P alloys. These atoms reside in low effective fields, and can participate in the spin-flip scattering process which produces a Kondo effect (resistivity minimum). The large critical concentration observed is also an indication that the spin correlations are greatly reduced in these amorphous alloys.

Pertenece a



Sharon, Thomas Edward - 

Id.: 71212968

Versión: 1.0

Estado: Final

Tipo:  application/pdf - 

Tipo de recurso: Thesis  -  NonPeerReviewed  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

Formatos:  application/pdf - 

Requerimientos técnicos:  Browser: Any - 

Relación: [References] http://resolver.caltech.edu/CaltechTHESIS:04122018-091817826
[References] https://thesis.library.caltech.edu/10803/

Fecha de contribución: 13-abr-2018


* Sharon, Thomas Edward (1971) Magnetism in an Amorphous Fe-Pd-P Alloy System. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechTHESIS:04122018-091817826

Otros recursos que te pueden interesar

  1. Ana Ancheta Arrabal, 2012: La Educación y Atención de la Primera Infancia en la Unión Europea. Un estudio comparado entre los sistemas educativos de Suecia, Inglaterra y España
  2. Bioeconomic simulation of productive systems in beef cattle production activities which emphasis in maintenance and pasture recovery Correct determination of beef cattle production costs remains a relatively confusing subject and is ...
  3. Milk yield and milk composition of Kalahari Red goat and the performance of their kids in the humid zone Milk yield and milk composition of Kalahari red goat and the performance of their kids in the humid ...
  4. Linear correlations between feeding behavior and apparent digestibility in feedlot ram lambs The aim of this study was to evaluate the linear correlations between feeding behavior and apparent ...
  5. Glyoxal observations in the global marine boundary layer Glyoxal is an important intermediate species formed by the oxidation of common biogenic and anthropo...

Otros recursos de la mismacolección

  1. Studies on Nuclear RNA

    The isolation of giant nuclear RNA (HnRNA) from rat ascites cells is described. By the criteria ...

  2. Characterization and Improvement of the Thermal Stability of TES Bolometers

    The successful detection and characterization of the B-modes in the Cosmic Microwave Background (...

  3. Functional Organization and Connections of the Middle Temporal Visual Area in the Macaque Monkey

    A variety of anatomical and physiological criteria have shown that the extrastriate visual cortex...

  4. Transition Metal Complexes of 1, 3-bis (2'-pyridylimino) Isoindolines and Their Use as Alcohol Oxidation Catalysts

    Condensation of 1, 2-dicyanobenzene and 2-amino-4-methylpyridine resulted in the formation of a l...

  5. General Methods for Analyzing Higgs Potentials

    This thesis is based on several papers published by the author and some more work to be published...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.