Textured Manganite Films Anywhere

Abstract

§: A.B and M.D contributed equally to this work Abstract:New paradigms are required in microelectronic when the transistor is in its downscaling limit and integration of materials presenting functional properties not available in classical silicon is one of the promising alternatives. Here, we demonstrate the possibility to grow La 0.67 Sr 0.33 MnO 3 (LSMO) functional materials on amorphous substrate with properties close to films grown on single crystalline substrate by use of a two-dimensional seed layer. X-ray diffraction and electron backscatter diffraction mapping demonstrate that Ca 2 Nb 3 O 10  nanosheets (NS) layer induces epitaxial stabilization of LSMO films with a strong out-of-plane (001) texture, whereas the growth of LSMO films on uncoated glass substrates exhibit a non-textured polycrystalline phase. Magnetic properties of LSMO films deposited on NS are similar to those of the LSMO grown on SrTiO 3 single crystal substrates in the same conditions (which is used as reference in this work). Moreover, transport measurements take advantages of the texture and polycrystalline properties in order to induce low field magnetoresistance at low temperature and also a high value of 40%

Tunable magnetic and magnetotransport properties in locally epitaxial La0.67Sr0.33MnO3 thin films on polycrystalline SrTiO3, by control of grain size

“…Therefore the TC value of the LSMO thin film grown on STO is in perfect agreement with the literature [30,32]. Nevertheless, compared to the bulk LSMO where the reported TC value is around 370 K, we observe a decrease of the magnetic transition temperature, which is due to the tensile strain (lattice mismatch = -1.15 %) imposed by the single-crystal STO substrates to the LSMO film [33,34]. The TC decrease can be related to the distortion of the LSMO structure corresponding to the tilting of O-Mn-O bonds angle and O-Mn bond length [35,36] induced by the tensile strain.…”

Highly Transparent and Conductive Indium‐Free Vanadates Crystallized at Reduced Temperature on Glass Using a 2D Transparent Nanosheet Seed Layer

“…NS are obtained by an exfoliation process of various layered oxides [31] and transferred by Langmuir-Blodgett (LB) method (Figure 1a,b) [32] on substrates that, when used bare, are non-adapted for complex oxide deposition, such as silicon or glass. The exceptionally rich structural diversity of NS makes them interesting growth templates for oxides [30,[33][34][35][36][37][38][39][40] or metals. [41] SVO has a cubic perovskite structure with a lattice parameter a = 0.384(1) nm [42] whereas CVO is orthorhombically (o) distorted with pseudo-cubic (pc) a pc = a o /√2 = b o /√2 = c o /2 ≈0.377(1) nm.…”

“…The preparation of the exfoliated Ca 2 Nb 3 O 10 − nanosheets starting from powder of KCa 2 Nb 3 O 10 oxide is described in detail in the references. [39,40] The obtained nanosheets in colloidal solution were deposited on two side polished Eagle XG Corning glass substrates (strain point 669 °C) using the LB method with the help of a KSV NIMA instrument (scheme Figure 1b). The size of the glass substrates (hereafter named GS) was 10 × 15 mm 2 , with a thickness of 0.5 mm.…”

Transfer of Epitaxial SrTiO3 Nanothick Layers Using Water-Soluble Sacrificial Perovskite Oxides

“…These nanosheets are deposited onto the substrates by Langmuir-like deposition using soft chemistry and the most common one is Ca 2 Nb 3 O 10 -. [25][26][27][28][29][30][31][32][33] These nanosheets are 2D materials, with a thickness of 1 to 2 nm and in-plane length from 500 nm to a few micrometers. The in-plane lattice parameter is 0.386 nm, close to the targeted perovskite used.…”