Name: radio frequency magnetron sputtering of gdba2cu3o7&#8722;&#948;/ la0.67sr0.33mno3 quasi-bilayer films on srtio3 (sto) single-crystal substrates
Uploaded: 2019-04-12T12:30:00
Description: Watch this Scientific Journal Video about Radio Frequency Magnetron Sputtering of GdBa2Cu3O7Ã¢Ë†'ÃŽÂ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates at JoVE.com

This work was supported by the National Natural Science Foundation of China (No. 51502168; No.11504227) and the Shanghai Municipal Natural Science Foundation (No.16ZR1413600).The authors gratefully thank the Instrumental Analysis Center of Shanghai Jiao Tong University and Ma-tek analytical lab for competent technical assistance.

1. Substrate and Target Preparation
NOTE: This section describes the preparation of the sputter deposition chamber and the single crystal SrTiO3 (STO) substrates.
<ol>
	<li>Use 10 mm x 10 mm SrTiO3 (STO) single-crystal substrates during the RF magnetron sputtering process.</li>
	<li>Sequentially clean the substrates in isopropanol and deionized water for 10 min each at room temperature in ultrasonic bath. Then dry the substrates with nitrogen, which is for uniform cover...

<ol>
	<li>Gong, J., Zheng, D., Li, D., Jin, C., Bai, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Lattice+distortion+modified+anisotropic+magnetoresistance+in+epitaxial+La0.67Sr0.33MnO3+thin+films.">Lattice distortion modified anisotropic magnetoresistance in epitaxial La0.67Sr0.33MnO3 thin films.</a> Journal of Alloys and Compounds. 735, 1152-1157 (2018).</li><li>Wang, J., Han, Z., Bai, J., Luo, B., Chen, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetoelectric+coupling+in+oxygen+deficient+La0.67Sr0.33MnO3-&#948;/BaTiO3+composite+film.">Magnetoelectric coupling in oxygen deficient La0.67Sr0.33MnO3-&#948;/BaTiO3 composite film.</a> Physica B: Condensed Matter. 534, 141-144 (2018).</li><li>Duan, Z., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Facile+fabrication+of+micro-patterned+LSMO+films+with+unchanged+magnetic+properties+by+photosensitive+sol-gel+method+on+LaAlO3+substrates.">Facile fabrication of micro-patterned LSMO films with unchanged magnetic properties by photosensitive sol-gel method on LaAlO3 substrates.</a> Ceramics International. 42 (12), 14100-14106 (2016).</li><li>Xu, P., Huffman, T. J., Kwak, I. H., Biswas, A., Qazilbash, M. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Temperature+dependent+infrared+nano-imaging+of+La0.67Sr0.33MnO3+thin+film.">Temperature dependent infrared nano-imaging of La0.67Sr0.33MnO3 thin film.</a> Journal of Physics-Condensed Matter. 30 (2), (2018).</li><li>Bulaevskii, L. N., Chudnovsky, E. M., Maley, M. P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetic+pinning+in+superconductor-ferromagnet+multilayers.">Magnetic pinning in superconductor-ferromagnet multilayers.</a> Applied Physics Letters. 76 (18), 2594-2596 (2000).</li><li>Chen, C. Z., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Flux+pinning+of+stress-induced+magnetic+inhomogeneity+in+the+bilayers+of+YBa2Cu3O7&#8722;&#948;/La0.67Sr0.33MnO3&#8722;&#948;.">Flux pinning of stress-induced magnetic inhomogeneity in the bilayers of YBa2Cu3O7&#8722;&#948;/La0.67Sr0.33MnO3&#8722;&#948;.</a> Journal of Applied Physics. 106 (9), 093902 (2009).</li><li>Chen, C. Z., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Robust+high-temperature+magnetic+pinning+induced+by+proximity+in+YBa2Cu3O7&#8722;&#948;/La0.67Sr0.33MnO3+hybrids.">Robust high-temperature magnetic pinning induced by proximity in YBa2Cu3O7&#8722;&#948;/La0.67Sr0.33MnO3 hybrids.</a> Journal of Applied Physics. 109 (7), 073921 (2011).</li><li>Huang, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetic+properties+of+(CoFe2O4)x:(CeO2)1&#8722;x+vertically+aligned+nanocomposites+and+their+pinning+properties+in+YBa2Cu3O7&#8722;&#948;+thin+films.">Magnetic properties of (CoFe2O4)x:(CeO2)1&#8722;x vertically aligned nanocomposites and their pinning properties in YBa2Cu3O7&#8722;&#948; thin films.</a> Journal of Applied Physics. 115 (12), 123902 (2014).</li><li>Lange, M., Bael, M. J. V., Bruynseraede, Y., Moshchalkov, V. V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nanoengineered+Magnetic-Field-Induced+Superconductivity.">Nanoengineered Magnetic-Field-Induced Superconductivity.</a> Physical Review Letters. 90 (19), 197006 (1970).</li><li>Rakshit, R. K., Budhani, R. C., Bhuvana, T., Kulkarni, V. N., Kulkarni, G. U. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Inhomogeneous+vortex-state-driven+enhancement+of+superconductivity+in+nanoengineered+ferromagnet-superconductor+heterostructures.">Inhomogeneous vortex-state-driven enhancement of superconductivity in nanoengineered ferromagnet-superconductor heterostructures.</a> Physical Review B. 77 (5), 052509 (2008).</li><li>Guo, H., Ward, T. Z. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Fabrication+of+Spatially+Confined+Complex+Oxides.">Fabrication of Spatially Confined Complex Oxides.</a> Journal of Visualized Experiments. 77, e50573 (2013).</li><li>Wang, Y., Li, Y., Liu, L., Xu, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Improvement+of+flux+pinning+in+GdBa2Cu3O7-delta+thin+film+by+nanoscale+ferromagnetic+La0.67Sr0.33MnO3+pretreatment+of+substrate+surface.">Improvement of flux pinning in GdBa2Cu3O7-delta thin film by nanoscale ferromagnetic La0.67Sr0.33MnO3 pretreatment of substrate surface.</a> Ceramics International. 44 (1), 225-230 (2018).</li><li>Mart&#237;n, J. I., V&#233;lez, M., Nogu&#233;s, J., Schuller, I. K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Flux+Pinning+in+a+Superconductor+by+an+Array+of+Submicrometer+Magnetic+Dots.">Flux Pinning in a Superconductor by an Array of Submicrometer Magnetic Dots.</a> Physical Review Letters. 79 (10), 1929-1932 (1997).</li><li>Morgan, D. J., Ketterson, J. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Asymmetric+Flux+Pinning+in+a+Regular+Array+of+Magnetic+Dipoles.">Asymmetric Flux Pinning in a Regular Array of Magnetic Dipoles.</a> Physical Review Letters. 80 (16), 3614-3617 (1998).</li><li>Gutierrez, J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Anisotropic+c-axis+pinning+in+interfacial+self-assembled+nanostructured+trifluoracetate-YBa2Cu3O7&#8722;x+films.">Anisotropic c-axis pinning in interfacial self-assembled nanostructured trifluoracetate-YBa2Cu3O7&#8722;x films.</a> Applied Physics Letters. 94 (17), 172513 (2009).</li><li>Tran, D. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Enhanced+critical+current+density+in+GdBa2Cu3O7-&#948;+thin+films+with+substrate+surface+decoration+using+Gd2O3+nanoparticles.">Enhanced critical current density in GdBa2Cu3O7-&#948; thin films with substrate surface decoration using Gd2O3 nanoparticles.</a> Thin Solid Films. 526, 241-245 (2012).</li><li>Jha, A. K., Khare, N., Pinto, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Interface+engineering+using+ferromagnetic+nanoparticles+for+enhancing+pinning+in+YBa2Cu3O7-delta+thin+film.">Interface engineering using ferromagnetic nanoparticles for enhancing pinning in YBa2Cu3O7-delta thin film.</a> Journal of Applied Physics. 110 (11), (2011).</li><li>Casotti, D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Ageing+effects+on+electrical+resistivity+of+Nb-doped+TiO2+thin+films+deposited+at+a+high+rate+by+reactive+DC+magnetron+sputtering.">Ageing effects on electrical resistivity of Nb-doped TiO2 thin films deposited at a high rate by reactive DC magnetron sputtering.</a> Applied Surface Science. 455, 267-275 (2018).</li><li>Li, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Preparation+of+single-phase+Ti2AlN+coating+by+magnetron+sputtering+with+cost-efficient+hot-pressed+Ti-Al-N+targets.">Preparation of single-phase Ti2AlN coating by magnetron sputtering with cost-efficient hot-pressed Ti-Al-N targets.</a> Ceramics International. 44 (14), 17530-17534 (2018).</li><li>Mahdhi, H., Djessas, K., Ben Ayadi, Z. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Synthesis+and+characteristics+of+Ca-doped+ZnO+thin+films+by+rf+magnetron+sputtering+at+low+temperature.">Synthesis and characteristics of Ca-doped ZnO thin films by rf magnetron sputtering at low temperature.</a> Materials Letters. 214, 10-14 (2018).</li><li>Shen, H., Wei, B., Zhang, D., Qi, Z., Wang, Z. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetron+sputtered+NbN+thin+film+electrodes+for+supercapacitors.">Magnetron sputtered NbN thin film electrodes for supercapacitors.</a> Materials Letters. 229, 17-20 (2018).</li><li>Sinnarasa, I., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Influence+of+thickness+and+microstructure+on+thermoelectric+properties+of+Mg-doped+CuCrO2+delafossite+thin+films+deposited+by+RF-magnetron+sputtering.">Influence of thickness and microstructure on thermoelectric properties of Mg-doped CuCrO2 delafossite thin films deposited by RF-magnetron sputtering.</a> Applied Surface Science. , 244-250 (2018).</li><li>Thi-Thuy-Nga, N., Chen, Y. -. H., Chen, Z. -. M., Cheng, K. -. B., He, J. -. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Microstructure+near+infrared+reflectance,+and+surface+temperature+of+Ti-O+coated+polyethylene+terephthalate+fabrics+prepared+by+roll-to-roll+high+power+impulse+magnetron+sputtering+system.">Microstructure near infrared reflectance, and surface temperature of Ti-O coated polyethylene terephthalate fabrics prepared by roll-to-roll high power impulse magnetron sputtering system.</a> Thin Solid Films. , 1-8 (2018).</li><li>Wang, Y., Xu, D., Li, Y., Liu, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Texture+and+morphology+developments+of+Yttria-stabilized+zirconia+(YSZ)+buffer+layer+for+coated+conductors+by+RF+sputtering.">Texture and morphology developments of Yttria-stabilized zirconia (YSZ) buffer layer for coated conductors by RF sputtering.</a> Surface &amp; Coatings Technology. 232, 497-503 (2013).</li><li>Petrisor, T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Magnetic+pinning+effects+of+epitaxial+LaxSr1-xMnO3+nanostructured+thin+films+on+YBa2Cu3O7-delta+layers.">Magnetic pinning effects of epitaxial LaxSr1-xMnO3 nanostructured thin films on YBa2Cu3O7-delta layers.</a> Journal of Applied Physics. 112 (5), (2012).</li></ol>

Here we have demonstrated that this method can be used to prepare LSMO ferromagnetic nanoparticles of uniform distribution on SrTiO3 (STO) single-crystal substrates. The (Gd) BCO films also can be deposited on both bare and LSMO decorated STO substrate. With an appropriate adjustment of deposited parameters, such as growth temperatures and target-substrate distance, this method ought to be useful for deposited different kinds of magnetic and non-magnetic particles or layers, for example, CeO2, YSZ (...

The hole-doped manganite La0.67Sr0.33MnO3 (LSMO) have unique properties such as wide-band gaps, half-metallic ferromagnetism, and entangled electronic states, which provide extraordinary opportunities for potential spintronic applications1,2,3,4. Currently, many researchers are endeavoring to take advantage of the unique properties of LSMO to inhabit the vortex movement for high temperature superconducting (HTS) films, such as (RE) Ba2Cu3O7&#8722;&#948; films (REBCO, RE= rare-earth element)5,6,7,8,9,10,11,12. Nanoscale decoration of the substrate surfaces with ferromagnetic nanoparticles will provide well-defined sites for inducing magnetic pinning centers of expected density13,14. However, the ability to control the density and geometry of the nanoparticles on highly textured surfaces, such as on single-crystal substrates and highly textured metal substrates is very difficult. Most commonly, nanoparticles are synthesized and coated on surfaces using metal organic decomposition methods15, and pulsed laser deposition methods16,17. Although pulse laser deposition methods can provide nanoparticles coated on various substrates, it is difficult to realize large area homogeneous nanoparticles deposition. As for metal organic decomposition methods, they are proper for large area deposition of nanoparticles. However, the nanoparticles are often non-uniform and easily damaged by small physical stresses.
Among these techniques, RF-magnetron sputtering has many advantages. Sputtering has a high deposition rate, low cost, and a lack of toxic gas emission. Also, it is easy to expand to large scale area substrates18,19. This method provides single-step formation of La0.67Sr0.33MnO3 (LSMO) nanoparticles, and the nanoparticles are easy to be deposited on single-crystal substrates. RF magnetron sputtering can create large area nanoparticles uniformly on a diverse range of substrates, irrespective of surface texture, and surface roughness20.The particle control can be achieved by adjust sputtering time. Homogeneity can be achieved by adjust target-substrate distance. The disadvantage of RF-magnetron sputtering is its lower growth rate for some oxides21. In this approach, target atoms (or molecules) are sputtered out of the target by argon ion, and then nanoparticles are deposited on substrates in the vapor phase22. Nanoparticles formation occurs on the substrate in a single step23. This method is theoretically applicable to any materials including superconducting thin film, resistance film, semiconductor film, ferromagnetic thin film etc. However, to date, reports about protocols for depositing ferromagnetic nanoparticles are very scarce.
Here, we demonstrate the deposition of GdBa2Cu3O7&#8722;&#948;/La0.67Sr0.33MnO3 quasi-bilayer films on SrTiO3 (STO) single-crystal substrates by RF magnetron sputtering method. Two kinds of target materials, GdBa2Cu3O7&#8722;&#948; and La0.67Sr0.33MnO3 target are used in the process. SrTiO3 (STO) single-crystal substrates were coated with GdBa2Cu3O7&#8722;&#948;films and GdBa2Cu3O7&#8722;&#948;/La0.67Sr0.33MnO3 quasi-bilayer films.
In this protocol, GdBa2Cu3O7&#8722;&#948;/La0.67Sr0.33MnO3 Quasi-bilayer films are deposited with RF magnetron sputtering on STO (001) substrates. The target diameter is 60 mm and the distance between the target and substrates is about 10 cm. The heaters are bulbs positioned 1 cm above the substrates. The maximum temperature is 850&#176;C in this system. There are 5 different substrates in this system. RF magnetron sputtering GdBa2Cu3O7&#8722;&#948;/La0.67Sr0.33MnO3 quasi-bilayer films consists of two steps, which are the preparation of substrates and the RF magnetron sputtering process. A picture of the sputtering system is shown in Figure&#160;S1.

<table>
	<tbody>
		<tr>
			<td>Sputter Deposition System</td>
			<td>Shenyang scientific instruments Limited by Share Ltd</td>
			<td>Bespoke</td>
			<td></td>
		</tr>
		<tr>
			<td>SrTiO3 Single Crystal Substrate</td>
			<td>Hefei Ke crystal material technology Co., Ltd</td>
			<td>Single-sided epi-polished</td>
			<td>(001) orientation</td>
		</tr>
		<tr>
			<td>La0.67Sr0.33MnO3 sputtering target</td>
			<td>Hefei Ke crystal material technology Co., Ltd</td>
			<td>Bespoke</td>
			<td>60 mm diameter</td>
		</tr>
		<tr>
			<td>GdBa2Cu3O7&#8722;&#948; sputtering target</td>
			<td>Hefei Ke crystal material technology Co., Ltd</td>
			<td>Bespoke</td>
			<td>60 mm diameter</td>
		</tr>
		<tr>
			<td>Atomic Force Microscope</td>
			<td>Br&#252;ker</td>
			<td>Dimension Icon</td>
			<td></td>
		</tr>
		<tr>
			<td>X-ray Diffractometer</td>
			<td>Br&#252;ker</td>
			<td>D8 Discover</td>
			<td></td>
		</tr>
		<tr>
			<td>Physical Property Measurement System</td>
			<td>Quantum Design</td>
			<td>PPMS 9</td>
			<td></td>
		</tr>
	</tbody>
</table>

radio frequency magnetron sputtering of gdba2cu3o7&#8722;&#948;/ la0.67sr0.33mno3 quasi-bilayer films on srtio3 (sto) single-crystal substrates

Here, we demonstrate a method of coating ferromagnetic La0.67Sr0.33MnO3 (LSMO) nanoparticles on (001) SrTiO3 (STO) single-crystal substrates by radio frequency (RF) magnetron sputtering. LSMO nanoparticles were deposited with diameters from 10 to 20 nm and heights between 20 and 50 nm. At the same time, (Gd) Ba2Cu3O7&#8722;&#948; ((Gd) BCO) films were fabricated on both undecorated and LSMO nanoparticle decorated STO substrates using RF magnetron sputtering. This report also describes the properties of GdBa2Cu3O7&#8722;&#948;/ La0.67Sr0.33MnO3 quasi-bilayer films structures (e.g., crystalline phase, morphology, chemical composition); magnetization, magneto-transport, and superconducting transport properties were also evaluated.

The thickness of (Gd) BCO films on both bare and LSMO decorated STO substrate was 500nm, which was measured by a surface profilometer. The film thickness was controlled by sputtering time. Figure 1a,b shows the AFM image of LSMO nanoparticle (sputtering time of 10 s) on 1.0 cm x 1.0 cm single-crystal STO substrates to prove that the LSMO nanoparticles grown on STO substrates uniformly. The surface and to measure the roughness of the films was...

Watch this Scientific Journal Video about Radio Frequency Magnetron Sputtering of GdBa2Cu3O7Ã¢Ë†'ÃŽÂ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates at JoVE.com

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7ÃƒÆ’Ã‚Â¢Ãƒâ€¹Ã¢â‚¬Â 'ÃƒÆ’Ã…Â½Ãƒâ€šÃ‚Â´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates

Here, we present a protocol to grow LSMO nanoparticles and (Gd) BCO films on (001) SrTiO3 (STO) single-crystal substrates by radio frequency (RF)-sputtering.

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7&#8722;&#948;/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates

Here, we demonstrate a method of coating ferromagnetic La0.67Sr0.33MnO3 (LSMO) nanoparticles on (001) SrTiO3 (STO) single-crystal substrates by radio ...

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