| Title: |
Tunable magnetic and magnetotransport properties in locally epitaxial La 0.67 Sr 0.33 MnO 3 thin films on polycrystalline SrTiO 3 , by control of grain size |
| Authors: |
Dallocchio, Marie; Boileau, Alexis; Mercey, Bernard; David, Adrian; Lüders, Ulrike; Froissart, Sandrine; Larose, Xavier; Bérini, Bruno; Dumont, Yves; Pautrat, Alain; Prellier, Wilfrid; Fouchet, Arnaud |
| Contributors: |
Laboratoire de cristallographie et sciences des matériaux (CRISMAT); Université de Caen Normandie (UNICAEN); Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN); Normandie Université (NU)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA); Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN); Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie); Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN); Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS); Groupe d'Etude de la Matière Condensée (GEMAC); Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS); The authors thank regional funding RIN Doctorants and french agence nationale de la recherche (ANR) (ANR-17-CE08-0012) in the framework of the POLYNASH project. The authors thank J Lecourt and F Veillon respectively for substrate preparation and physical measurements.; ANR-17-CE08-0012,Polynash,Substrats bas couts polycristallins et Nanofeuillets de germination(2017) |
| Source: |
ISSN: 0022-3727 ; EISSN: 1361-6463. |
| Publisher Information: |
CCSD; IOP Publishing |
| Publication Year: |
2022 |
| Collection: |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
| Subject Terms: |
CMR; LFMR; Physical properties; EBSD; Polycrystalline substrates; LSMO; Thin films; [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat]; [CHIM]Chemical Sciences; [SPI]Engineering Sciences [physics] |
| Description: |
International audience ; La0.67Sr0.33MnO3 (LSMO) thin films have been grown by pulsed laser deposition on SrTiO3 using combinatorial substrate epitaxy (CSE) approach, i.e. polycrystalline substrates with micrometer-size grains. The crystallographic domains size of those polycrystalline substrates can be controlled between 2 to 45 µm depending on the annealing temperature during synthesis. Each grain of the substrate acts as a single crystalline growth template promoting local epitaxy with a reproduction of the substrate grain structure in the thin film. Therefore, a fine-tuning of the substrate grain metrics and high crystalline quality of locally epitaxial LSMO film, allows to combine the advantages of polycrystalline, i.e. the presence of low field magnetoresistance (LFMR) and the possibility to use very thin films, with a pronounced magnetic shape anisotropy. For this, the magnetic and transport properties of the films are showing a strong influence with varying grain metrics of the substrate. High Curie temperatures, important values of the LFMR and anisotropy for optimized substrate grain metrics with the relative orientation of the magnetic field to the film plane underline the high quality of the films and the advantage of the CSE approach. The obtained LSMO thin films may have an interest for high-resolution low field magnetic sensors application. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1088/1361-6463/ac5a1f |
| Availability: |
https://hal.science/hal-03608785; https://hal.science/hal-03608785v1/document; https://hal.science/hal-03608785v1/file/Dallochi%20JPD.pdf; https://doi.org/10.1088/1361-6463/ac5a1f |
| Rights: |
http://hal.archives-ouvertes.fr/licences/copyright/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.CDAB09F |
| Database: |
BASE |