Herein, we report the emergence of multicolor photoluminescence in a mixed-valence manganite nanoparticle La0.67Sr0.33MnO3 (LSMO NP) achieved through electronic structural modification of the nanoparticles upon functionalization with a biocompatible organic ligand, sodium tartrate. From UV−vis absorption, X-ray photoelectron spectroscopy (XPS), time-resolved photoluminescence study, and Raman s...

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. The evolution of the surface topographic and electronic structure and chemical state of the La 0.7 Sr 0.3 MnO 3 (LS...

The low field magnetotransport of La0.7Sr0.3MnO3 (LSMO) films grown on SrTiO3 substrates has been investigated. A high qualtity LSMO film exhibits anisotropic magnetoresistance (AMR) and a peak in the magnetoresistance close to the Curie temperature of LSMO. Bi-epitaxial films prepared using a seed layer of MgO and a buffer layer of CeO2 display a resistance dominated by grain boundaries. One f...

Interfaces between materials present unique opportunities for the discovery of intriguing quantum phenomena. Here, we explore the possibility that, in the case of superlattices, if one of the layers is made ultrathin, unexpected properties can be induced between the two bracketing interfaces. We pursue this objective by combining advanced growth and characterization techniques with theoretical ...

While magnetic nanowires generally have a preferential magnetization direction along the wire axis to minimize magnetostatic energy, it is shown here for epitaxial magnetic oxide nanowires that substrate-induced strain can be used to tailor the magnetic easy axis in any direction. La0.67Sr0.33MnO3 LSMO nanowires were prepared by pulsed laser deposition of LSMO thin films on NdGaO3 NGO substrate...

Our studies of compressively strained La0.7Sr0.3MnO7 ~LSMO! thin films reveal the importance of domain structure and strain effects in the magnetization reversal and magnetotransport. Normal and grazing incidence x-ray diffraction indicate that the compressive strain on these LSMO thin films on ~100! LaAlO3 is not completely relaxed up to thicknesses on the order of 1000 Å. The effect of the co...

Advanced oxides are the current focus of intense research activity, driven by their numerous attractive properties for next generation microelectronics. However, reliable strategies must be developed for the electrical contacting of such films without compromising their functionality. We explore the effect of depositing both noble and oxidising metals onto the ferromagnetic La0.7Sr0.3MnO3 (LSMO...

Interface engineering is an effective and feasible method to regulate the magnetic anisotropy of films by altering interfacial states between films. Using technique pulsed laser deposition, we prepared La 0.67 Sr 0.33 MnO 3 (LSMO) /SrCoO 2.5 (LSMO/SCO) on (110)-oriented 0.3 0.7 Al 0.65 Ta 0.35 O substrates. By covering SCO film above LSMO film, transformed easy magnetization axis from [001] [ <...

A spin tunnel junction based on manganites, with La1−xSrxMnO3 LSMO as ferromagnetic metallic electrodes and the undoped parent compound LaMnO3 LMO as insulating barrier, is here theoretically discussed using double-exchange model Hamiltonians and numerical techniques. For an even number of LMO layers, the ground state is shown to have antiparallel LSMO magnetic moments. This highly resistive, b...

We have observed photocarrier transport behaviors in ${\mathrm{BiFeO}}_{3}/{\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{MnO}}_{3}$ (BFO/LSMO) heterostructures by using time-resolved synchrotron x-ray magnetic circular dichroism reflectivity. The magnetization of LSMO layers was used as a probe photo-induced carrier dynamics the photovoltaic BFO layers. During demagnetization proces...