Artículo
Milling effects on the distribution of Curie temperatures and magnetic properties of Ni-doped La0·7Ca0·3MnO3 compounds
Autor/es | Manchón Gordón, Alejandro F.
Gómez, Adrián Ipus Bados, Jhon Jairo Blázquez Gámez, Javier Sebastián Conde Amiano, Clara Francisca Conde Amiano, Alejandro |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2020 |
Fecha de depósito | 2023-06-05 |
Publicado en |
|
Resumen | A systematic study of the magnetic and magnetocaloric properties
around the ferromagnetic-paramagnetic phase transition temperature have been carried
out on La0.7Ca0.3Mn1-xNixO3 (x = 0, 0.02, 0.07, 0.10) compounds ... A systematic study of the magnetic and magnetocaloric properties around the ferromagnetic-paramagnetic phase transition temperature have been carried out on La0.7Ca0.3Mn1-xNixO3 (x = 0, 0.02, 0.07, 0.10) compounds synthesized by ball milling from oxides and pure Ni. The order of the transition, analyzed by the Banerjee’s criterion and the field dependence of the magnetic entropy change, was found to be of second order for all the studied compositions. The existence of small traces of 𝛽�����-MnO2 phase and the distortions produced during the milling process may induce a competition character of the ferromagnetic and the antiferromagnetic interactions at low fields and motivate the existence of a distribution of Curie temperatures. Once the antiferromagnetic contributions are avoided, the parameters of the distribution, the average Curie temperature 𝑇�����𝐶����� ̅̅̅ and the broadening of the distribution ∆𝑇�����𝐶�����, have been obtained from the analysis of the approach to saturation curves and the magnetocaloric effect. |
Agencias financiadoras | Agencia Estatal de Investigación. España Junta de Andalucía |
Identificador del proyecto | MAT 2016-77265-R
US-1260179 |
Cita | Manchón Gordón, A.F., Gómez, A., Ipus Bados, J.J., Blázquez Gámez, J.S., Conde Amiano, C.F. y Conde Amiano, A. (2020). Milling effects on the distribution of Curie temperatures and magnetic properties of Ni-doped La0·7Ca0·3MnO3 compounds. Journal of Alloys and Compounds, 848. https://doi.org/10.1016/j.jallcom.2020.156566. |
Ficheros | Tamaño | Formato | Ver | Descripción |
---|---|---|---|---|
Milling effects on the distrib ... | 1012.Kb | [PDF] | Ver/ | |