THE REORDERING TRANSITION IN LAYER DISORDERED SOLIDS: RARE EARTH - TRANSITION METAL INTERMETALLIC ALLOYS.
Planar faulting in in rare earth - cobalt alloys with type structures ThNi and ThZn are studied. The structure changes from hexagonal for heavy rare earth to rhombohedral for light rare earth, all exhibiting different degrees of planar disorder. Faulting is quantitatively studied beyond the model of...
| Publicado en: | Revista Cubana de Física Vol. 32; no. 2; pp. 74 - 80 |
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| Autores principales: | , , , |
| Formato: | Artículo |
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Universidad de La Habana
2015
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=lth&AN=112021674&site=ehost-live header: @attributes: shortDbName: lth uiTerm: 112021674 longDbName: MedicLatina uiTag: AN controlInfo: bkinfo: jinfo: jid: 02539268 UEW jtl: Revista Cubana de Física issn: 02539268 maglogo: N pubinfo: dt: 2015 vid: 32 iid: 2 pid: 21208 pub: Universidad de La Habana artinfo: ui: 112021674 ppf: 74 ppct: 6 formats: fmt: @attributes: type: P size: 538KB tig: atl: THE REORDERING TRANSITION IN LAYER DISORDERED SOLIDS: RARE EARTH - TRANSITION METAL INTERMETALLIC ALLOYS. aug: au: PENTON-MADRIGAL, ARBELIO ESTEVEZ-RAMS, ERNESTO AZANZA-RICARDO, CRISTY LORA SERRANO, RAYMUNDO affil: Facultad de Física, Universidad de la Habana, 10400 La Habana, Cuba Instituto de Ciencia y Tecnología de Materiales(IMRE), Universidad de la Habana, 10400 La Habana, Cuba University of Trento, Dipartimento di Ingegneria dei Materiali e delle Tecnologie Industriali, via Mesiano 77, 38050 Trento, Italia Instituto de Fisica, Universidade Federal de Uberlandia, 38400-902 Uberlandia-MG, Brazil su: Rare earth metals Intermetallic compounds Alloys Cobalt alloys Diffraction patterns Crystals sug: subj: Rare earth metals Intermetallic compounds Alloys Cobalt alloys Diffraction patterns Crystals ab: Planar faulting in in rare earth - cobalt alloys with type structures ThNi and ThZn are studied. The structure changes from hexagonal for heavy rare earth to rhombohedral for light rare earth, all exhibiting different degrees of planar disorder. Faulting is quantitatively studied beyond the model of independent faulting events showing the strength of direct solutions to extract defects information from the diffraction patterns. It is showed that the analysis of the decaying term of the probability correlation function, does not only allow to quantify the loss of memory in the system through the correlation length but also, the strength of interaction between faults. The behavior of the decaying terms turns not to be of universal character when scaled against the correlation length and instead depends on the interaction of faulting. The reconstructive phase transition in this system seems to follow a path where the new phase appears within the disordered phase and grows without homogeneous reordering of the disordered arrangement. Se estudia la ocurrencia de defectos planares en aleaciones de tierras raras - cobalto con estructuras tipos Th2Ni17y Th2Zn17. La estructura cambia desde hexagonal para tierras raras pesadas hasta romboédrica para tierras raras ligeras. La ocurrencia de defectos se estudia cuantitativamente m3s all3 del modelo de ocurrencia de defectos independientes mostrando la robustez de las soluciones directas para extraer información sobre defectos a partir de los patrones de difraccion. Se demuestra que el análisis del termino de decaimiento de la funcion de correlacion de probabilidades, no solo permite cuantificar la perdida de memoria en el sistema a travos de la longitud de correlación, sino tambien el grado de interaccion entre defectos. El comportamiento del termino de decaimiento muestra no ser de carácter universal cuando este es escalado respecto a la longitud de correlación y en su lugar depende de la interacción entre defectos. La transicion de fase reconstructiva en este sistema parece seguir un recorrido donde la nueva fase emerge dentro de la fase desordenada y crece sin un reordenamiento homogéneo del arreglo desordenado. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y custom: Copyright of Revista Cubana de Física is the property of Universidad de La Habana and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. item: Revista Cubana de Física holder: Universidad de La Habana dt: @attributes: year: 2015 holdings: @attributes: islocal: N |
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