Influence of Thickness on the Magnetic and Magnetotransport Properties of Epitaxial LaSrMnO Films Deposited on STO (0 0 1)

Overview

Journal Nanomaterials (Basel)

Date 2021 Dec 24

PMID 34947736

Authors

Simona Gabriela Greculeasa

Anda-Elena Stanciu

Aurel Leca

Andrei Kuncser

Luminita Hrib

Cristina Chirila

Iuliana Pasuk

Victor Kuncser

Affiliations

Soon will be listed here.

Abstract

Epitaxial LaSrMnO films with different thicknesses (9-90 nm) were deposited on SrTiO (0 0 1) substrates by pulsed laser deposition. The films have been investigated with respect to morpho-structural, magnetic, and magneto-transport properties, which have been proven to be thickness dependent. Magnetic contributions with different switching mechanisms were evidenced, depending on the perovskite film thickness. The Curie temperature increases with the film thickness. In addition, colossal magnetoresistance effects of up to 29% above room temperature were evidenced and discussed in respect to the magnetic behavior and film thickness.

References

Millis , Shraiman , Mueller . Dynamic Jahn-Teller Effect and Colossal Magnetoresistance in La 1-xSrxMnO3. Phys Rev Lett. 1996; 77(1):175-178. DOI: 10.1103/PhysRevLett.77.175. View

Garcia V, Bibes M . Ferroelectric tunnel junctions for information storage and processing. Nat Commun. 2014; 5:4289. DOI: 10.1038/ncomms5289. View

Sinha U, Das B, Padhan P . Interfacial reconstruction in LaSrMnO thin films: giant low-field magnetoresistance. Nanoscale Adv. 2022; 2(7):2792-2799. PMC: 9418895. DOI: 10.1039/d0na00287a. View

Dediu V, Hueso L, Bergenti I, Taliani C . Spin routes in organic semiconductors. Nat Mater. 2009; 8(9):707-16. DOI: 10.1038/nmat2510. View

Urushibara , Moritomo , Arima , Asamitsu , Kido , Tokura . Insulator-metal transition and giant magnetoresistance in La1-xSrxMnO3. Phys Rev B Condens Matter. 1995; 51(20):14103-14109. DOI: 10.1103/physrevb.51.14103. View

FATH , Freisem , Menovsky , Tomioka , Aarts , Mydosh . Spatially Inhomogeneous Metal-Insulator Transition in Doped Manganites. Science. 1999; 285(5433):1540-1542. DOI: 10.1126/science.285.5433.1540. View

Coey J, Venkatesan M, Stamenov P . Surface magnetism of strontium titanate. J Phys Condens Matter. 2016; 28(48):485001. DOI: 10.1088/0953-8984/28/48/485001. View

Hrib L, Pintilie L, Alexe M . Magnetocapacitance in LaSrMnO/Pb(ZrTi)O/LaSrMnO multiferroic heterostructures. Sci Rep. 2017; 7(1):6563. PMC: 5529449. DOI: 10.1038/s41598-017-06487-3. View

RAMIREZ , Schiffer , Cheong , Chen , Bao , Palstra . Thermodynamic and electron diffraction signatures of charge and spin ordering in La1- xCaxMnO3. Phys Rev Lett. 1996; 76(17):3188-3191. DOI: 10.1103/PhysRevLett.76.3188. View

10.

Lukose R, Plausinaitiene V, Vagner M, Zurauskiene N, Kersulis S, Kubilius V . Relation between thickness, crystallite size and magnetoresistance of nanostructured La Sr Mn O films for magnetic field sensors. Beilstein J Nanotechnol. 2019; 10:256-261. PMC: 6350892. DOI: 10.3762/bjnano.10.24. View

11.

Bolstad T, Lysne E, Hallsteinsen I, Arenholz E, Osterberg U, Tybell T . Effect of (1 1 1)-oriented strain on the structure and magnetic properties of LaSrMnO thin films. J Phys Condens Matter. 2018; 30(25):255702. DOI: 10.1088/1361-648X/aac468. View

12.

Nadgorny B . The case against half-metallicity in La(0.7)Sr(0.3)MnO(3). J Phys Condens Matter. 2011; 19(31):315209. DOI: 10.1088/0953-8984/19/31/315209. View