Skip to main content Accessibility help
×
Home
Hostname: page-component-5c569c448b-nqqt6 Total loading time: 0.306 Render date: 2022-07-05T22:46:31.791Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "useRatesEcommerce": false, "useNewApi": true } hasContentIssue true

Strain relaxation defects in perovskite oxide superlattices

Published online by Cambridge University Press:  19 March 2012

Meng Gu
Affiliation:
Department of Chemical Engineering and Materials Science, University of California–Davis, Davis, California 95616
Michael D. Biegalski
Affiliation:
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
Hans M. Christen
Affiliation:
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
Chengyu Song
Affiliation:
National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720
Craig R. Dearden
Affiliation:
Department of Chemical Engineering and Materials Science, University of California–Davis, Davis, California 95616
Nigel D. Browning
Affiliation:
Department of Chemical Engineering and Materials Science, University of California–Davis, Davis, California95616; Department of Molecular and Cellular Biology, University of California–Davis, Davis, California 95616
Yayoi Takamura*
Affiliation:
Department of Chemical Engineering and Materials Science, University of California–Davis, Davis, California 95616
*
b)Address all correspondence to this author. e-mail: ytakamura@ucdavis.edu
Get access

Abstract

This paper reports on the defect structures formed upon strain relaxation in pulsed laser-deposited complex oxide superlattices consisting of the ferromagnetic metal, La0.67Sr0.33MnO3, and the antiferromagnetic insulator, La0.67Sr0.33FeO3. Atomic resolution scanning transmission electron microscopy and electron energy loss spectroscopy were used to characterize the structure and chemistry of the defects. For thinner superlattices, strain relaxation occurs through the formation of 2-D stacking faults, whereas for thicker superlattices, the prolonged thermal exposure during film growth leads to the formation of nanoflowers and cracks/pinholes to reduce the overall strain energy.

Type
Articles
Copyright
Copyright © Materials Research Society 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Ohtomo, A. and Hwang, H.Y.: A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface. Nature 427(6973), 423 (2004).CrossRefGoogle ScholarPubMed
2.Takamura, Y., Yang, F., Kemik, N., Arenholz, E., Biegalski, M.D., and Christen, H.M.: Competing interactions in ferromagnetic/antiferromagnetic perovskite superlattices. Phys. Rev. B 80(18), 180417 (2009).CrossRefGoogle Scholar
3.Nakagawa, N., Hwang, H.Y., and Muller, D.A.: Why some interfaces cannot be sharp. Nat. Mater. 5(3), 204 (2006).CrossRefGoogle Scholar
4.Qiao, L., Droubay, T.C., Varga, T., Bowden, M.E., Shutthanandan, V., Zhu, Z., Kaspar, T.C., and Chambers, S.A.: Epitaxial growth, structure, and intermixing at the LaAlO3/SrTiO3 interface as the film stoichiometry is varied. Phys. Rev. B 83(8), 085408 (2011).CrossRefGoogle Scholar
5.Lee, H.N., Christen, H.M., Chisholm, M.F., Rouleau, C.M., and Lowndes, D.H.: Strong polarization enhancement in asymmetric three-component ferroelectric superlattices. Nature 433(7024), 395 (2005).CrossRefGoogle ScholarPubMed
6.Ferguson, J.D., Kim, Y., Kourkoutis, L.F., Vodnick, A., Woll, A.R., Muller, D.A., and Brock, J.D.: Epitaxial oxygen getter for a brownmillerite phase transformation in manganite films. Adv. Mater. 23(10), 1226 (2011).CrossRefGoogle ScholarPubMed
7.Ramirez, A.P.: Colossal magnetoresistance. J. Phys. Condens. Matter 9(39), 8171 (1997).CrossRefGoogle Scholar
8.de Gennes, P.G.: Effects of double exchange in magnetic crystals. Phys. Rev. 118(1), 141 (1960).CrossRefGoogle Scholar
9.Millis, A.J., Littlewood, P.B., and Shraiman, B.I.: Double exchange alone does not explain the resistivity of La1-xSrxMnO3. Phys. Rev. Lett. 74, 5144 (1995).CrossRefGoogle Scholar
10.Goodenough, J.B.: Magnetism and Chemical Bond (Interscience, London, 1963), Vol. 1.Google Scholar
11.Yang, J.B., Yelon, W.B., James, W.J., Chu, Z., Kornecki, M., Xie, Y.X., Zhou, X.D., Anderson, H.U., Joshi, A.G., and Malik, S.K.: Crystal structure, magnetic properties, and mossbauer studies of La0.6Sr0.4FeO3-δ prepared by quenching in different atmospheres. Phys. Rev. B 66(18), 184415 (2002).CrossRefGoogle Scholar
12.Arenholz, E., van der Laan, G., Yang, F., Kemik, N., Biegalski, M.D., Christen, H.M., and Takamura, Y.: Magnetic structure of La0.7Sr0.3MnO3/La0.7Sr0.3FeO3 superlattices. Appl. Phys. Lett. 94(7), 072503 (2009).CrossRefGoogle Scholar
13.Yang, F., Kemik, N., Scholl, A., Doran, A., Young, A.T., Biegalski, M.D., Christen, H.M., and Takamura, Y.: Correlated domain structure in perovskite oxide superlattices exhibiting spin-flop coupling. Phys. Rev. B 83(1), 014417 (2011).CrossRefGoogle Scholar
14.Erni, R., Rossell, M.D., Kisielowski, C., and Dahmen, U.: Atomic-resolution imaging with a sub-50-pm electron probe. Phys. Rev. Lett. 102(9), 096101 (2009).CrossRefGoogle ScholarPubMed
15.Koch, C.: Determination of core structure periodicity and point defect density along dislocations. Ph.D Thesis, Arizona State University, 2002.Google Scholar
16.Arenholz, E. and Prestemon, S.O.: Design and performance of an eight-pole resistive magnet for soft x-ray magnetic dichroism measurements. Rev. Sci. Instrum. 76(8), 083908 (2005).CrossRefGoogle Scholar
17.Kemik, N., Gu, M., Yang, F., Chang, C.-Y., Song, D., Bibee, M., Mehta, A., Biegalski, M.D., Christen, H.M., Browning, N.D., and Takamura, Y.: Resonant x-ray reflectivity study of perovskite oxide superlattices. Appl. Phys. Lett. 99, 201908 (2011).CrossRefGoogle Scholar
18.Shannon, R.: Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallogr., Sect. A 32(5), 751 (1976).CrossRefGoogle Scholar
19.Fischer, A.M., Wu, Z., Sun, K., Wei, Q., Huang, Y., Senda, R., Iida, D., Iwaya, M., Amano, H., and Ponce, F.A.: Misfit strain relaxation by stacking fault generation in InGaN quantum wells grown on m-plane GaN. Appl. Phys. Express 2, 041002/1 (2009).CrossRefGoogle Scholar
20.Schmid, H.K. and Mader, W.: Oxidation states of Mn and Fe in various compound oxide systems. Micron 37(5), 426 (2006).CrossRefGoogle ScholarPubMed
21.Riedl, T., Gemming, T., and Wetzig, K.: Extraction of EELS white-line intensities of manganese compounds: Methods, accuracy, and valence sensitivity. Ultramicroscopy 106, 284 (2006).CrossRefGoogle ScholarPubMed
22.Muller, D.A.: Structure and bonding at the atomic scale by scanning transmission electron microscopy. Nat. Mater. 8(4), 263 (2009).CrossRefGoogle Scholar
23.Shah, A.B., Ramasse, Q.M., Wen, J.G., Bhattacharya, A., and Zuo, J.M.: Practical spatial resolution of electron energy loss spectroscopy in aberration-corrected scanning transmission electron microscopy. Micron 42(6), 539 (2011).CrossRefGoogle ScholarPubMed
24.Siwach, P.K., Singh, H.K., Srivastava, O.N.: Influence of strain relaxation on magnetotransport properties of epitaxial La0.7Ca0.3MnO3 films. J. Phys. Condens. Matter 18(43), 9783 (2006).CrossRefGoogle Scholar
25.He, J.Q., Klie, R.F., Logvenov, G., Bozovic, I., and Zhu, Y.M.: Microstructure and possible strain relaxation mechanisms of La2CuO4+δ thin films grown on LaSrAlO4 and SrTiO3 substrates. J. Appl. Phys. 101(7), 073906 (2007).CrossRefGoogle Scholar
26.Matthews, J.W. and Blakeslee, A.E.: Defects in epitaxial multilayers: I. Misfit dislocations. J. Cryst. Growth 27, 118 (1974).Google Scholar
27.Peng, L.S.J., Xi, X.X., Moeckly, B.H., and Alpay, S.P.: Strain relaxation during in situ growth of SrTiO3 thin films. Appl. Phys. Lett. 83, 4592 (2003).CrossRefGoogle Scholar
28.Tersoff, J. and LeGoues, F.K.: Competing relaxation mechanisms in strained layers. Phys. Rev. Lett. 72(22), 3570 (1994).CrossRefGoogle ScholarPubMed
29.Loane, R.F., Kirkland, E.J., and Silcox, J.: Visibility of single heavy atoms on thin crystalline silicon in simulated annular dark-field STEM images. Acta Crystallogr., Sect. A 44(6), 912 (1988).CrossRefGoogle Scholar
30.Mastrikov, Y., Heifets, E., Kotomin, E., and Maier, J.: Atomic, electronic and thermodynamic properties of cubic and orthorhombic LaMnO3 surfaces. Surf. Sci. 603(2), 326 (2009).CrossRefGoogle Scholar
31.de Groot, F.M.F.: X-ray absorption and dichroism of transition metals and their compounds. J. Electron. Spectrosc. Relat. Phenom. 67(4), 529 (1994).CrossRefGoogle Scholar
32.Huijben, M., Martin, L.W., Chu, Y.H., Holcomb, M.B., Yu, P., Rijnders, G., Blank, D.H.A., and Ramesh, R.: Critical thickness and orbital ordering in ultrathin La0.7Sr0.3MnO3 films. Phys. Rev. B 78(9), 094413 (2008).CrossRefGoogle Scholar
33.Takamura, Y., Chopdekar, R.V., Arenholz, E., and Suzuki, Y.: Control of the magnetic and magnetotransport properties of La0.67Sr0.33MnO3 thin films through epitaxial strain. Appl. Phys. Lett. 92(16), 162504 (2008).CrossRefGoogle Scholar
34.Konishi, Y., Fang, Z., Izumi, M., Manako, T., Kasai, M., Kuwahara, H., Kawasaki, M., Terakura, K., and Tokura, Y.: Orbital-state-mediated phase-control of manganites. J. Phys. Soc. Jpn. 68, 3790 (1999).CrossRefGoogle Scholar
35.Moreno, C., Abellán, P., Hassini, A., Ruyter, A., del Pino, A.P., Sandiumenge, F., Casanove, M.-J., Santiso, J., Puig, T., and Obradors, X.: Spontaneous outcropping of self-assembled insulating nanodots in solution-derived metallic ferromagnetic La0.7Sr0.3MnO3 films. Adv. Funct. Mater. 19(13), 2139 (2009).CrossRefGoogle Scholar
36.Yang, F., Kemik, N., egalski, M.D., Christen, H.M., Arenholz, E., and Takamura, Y.: Strain engineering to control the magnetic and magnetotransport properties of La0.67Sr0.33MnO3 thin films. Appl. Phys. Lett. 97,092503/1 (2010).Google Scholar
Supplementary material: File

Gu et al. supplementary material

Appendix

Download Gu et al. supplementary material(File)
File 4 MB

Save article to Kindle

To save this article to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Strain relaxation defects in perovskite oxide superlattices
Available formats
×

Save article to Dropbox

To save this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Dropbox account. Find out more about saving content to Dropbox.

Strain relaxation defects in perovskite oxide superlattices
Available formats
×

Save article to Google Drive

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

Strain relaxation defects in perovskite oxide superlattices
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *