Pérez de Landazábal Berganzo, José Ignacio

Profile Picture

Email Address

person.page.identifierURI

https://academica-e.unavarra.es/handle/2454/49767

Birth Date

Job Title

Last Name

Pérez de Landazábal Berganzo

First Name

José Ignacio

person.page.departamento

Ciencias

person.page.instituteName

InaMat2. Instituto de Investigación en Materiales Avanzados y Matemáticas

ORCID

0000-0003-1172-6141

person.page.observainves

88476

person.page.upna

1681

Name

Filters

20191
Reset filters

Settings

Author: Cesari, Eduard × Subject: Density functional theory ×

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    PublicationOpen Access
    Experimental observation of vacancy-assisted martensitic transformation shift in Ni-Fe-Ga alloys
    (American Physical Society, 2019) Unzueta, Iraultza; Alonso de Robador Lorente, Daniel; Cesari, Eduard; Sánchez-Alarcos Gómez, Vicente; Recarte Callado, Vicente; Pérez de Landazábal Berganzo, José Ignacio; García, José Ángel; Plazaola, Fernando; Zientziak; Institute for Advanced Materials and Mathematics - INAMAT2; Ciencias
    Positron annihilation lifetime spectroscopy is used to experimentally demonstrate the direct relationship between vacancies and the shift of the martensitic transformation temperature in a Ni55Fel7Ga28 alloy. The evolution of vacancies assisting the ordering enables shifts of the martensitic transformation up to 50 K. Our results confirm the role that both vacancy concentration and different vacancy dynamics play in samples quenched from the L2(1) and B2 phases, which dictate the martensitic transformation temperature and its subsequent evolution. Finally, by electron-positron density functional calculations V-Ni is identified as the most probable vacancy present in Ni55Fe17Ga28. This work evidences the capability of vacancies for the fine-tuning of the martensitic transformation temperature, paving the way for defect engineering of multifunctional properties.