Journal ArticleDOI
Direct measurement of strain effects on magnetic and electrical properties of epitaxial SrRuO3 thin films
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TLDR
In this paper, the authors demonstrate how elastic strain can alter the magnetic and electrical properties of single-domain epitaxial thin films (1000 A thick) on vicinal (001) SrTiO3 substrates.Abstract:
By lifting an epitaxial thin film off its growth substrate, we directly and quantitatively demonstrate how elastic strain can alter the magnetic and electrical properties of single-domain epitaxial SrRuO3 thin films (1000 A thick) on vicinal (001) SrTiO3 substrates. Free-standing films were then obtained by selective chemical etching of the SrTiO3. X-ray diffraction analysis shows that the free-standing films are strain free, whereas the original as-grown films on SrTiO3 substrates are strained due to the lattice mismatch at the growth interface. Relaxation of the lattice strain resulted in a 10 K increase in the Curie temperature to 160 K, and a 20% increase in the saturation magnetic moment to 1.45 μB/Ru atom. Both values for the free-standing films are the same as that of the bulk single crystals. Our results provide direct evidence of the crucial role of the strain effect in determining the properties of the technologically important perovskite epitaxial thin films.read more
Citations
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Journal ArticleDOI
Room-temperature ferroelectricity in strained SrTiO3.
J. H. Haeni,Patrick Irvin,Wontae Chang,Reinhard Uecker,P. Reiche,Y. L. Li,Somnath Choudhury,Wei Tian,Marilyn E. Hawley,B. Craigo,Alexander K. Tagantsev,Xiaoqing Pan,Stephen K. Streiffer,Long Qing Chen,Steven W. Kirchoefer,Jeremy Levy,Darrell G. Schlom +16 more
TL;DR: It is shown that epitaxial strain from a newly developed substrate can be harnessed to increase Tc by hundreds of degrees and produce room-temperature ferro electricity in strontium titanate, a material that is not normally ferroelectric at any temperature.
Journal ArticleDOI
Enhancement of ferroelectricity in strained BaTiO3 thin films.
Kyoung Jin Choi,Michael D. Biegalski,Yulan Li,Alok Sharan,Jürgen Schubert,Reinhard Uecker,P. Reiche,Y. B. Chen,Xiaoqing Pan,Venkatraman Gopalan,Long Qing Chen,Darrell G. Schlom,Chang-Beom Eom +12 more
TL;DR: This work demonstrates a route to a lead-free ferroelectric for nonvolatile memories and electro-optic devices.
Journal ArticleDOI
Strain Tuning of Ferroelectric Thin Films
Darrell G. Schlom,Long Qing Chen,Chang-Beom Eom,Karin M. Rabe,Stephen K. Streiffer,Jean-Marc Triscone +5 more
TL;DR: In this paper, the effect of biaxial strain on the properties of epitaxial ferroelectric thin films and superlattices is discussed. But the results for single-layer thin films are not discussed.
Journal ArticleDOI
Extrinsic magnetotransport phenomena in ferromagnetic oxides
TL;DR: In this article, a review of extrinsic magnetotransport effects in ferromagnetic oxides is presented, focusing on grain-boundary, tunnelling and domain-wall magnetoresistance.
Journal ArticleDOI
Elastic strain engineering of ferroic oxides
Darrell G. Schlom,Long Qing Chen,Craig J. Fennie,Venkatraman Gopalan,David A. Muller,Xiaoqing Pan,Ramamoorthy Ramesh,Reinhard Uecker +7 more
TL;DR: In this paper, the use of elastic strain to enhance ferroics is discussed, which can be used to enhance the properties of known ferroic oxides or to create new tunable microwave dielectrics with performance that rivals that of existing materials.
References
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Journal ArticleDOI
Single-Crystal Epitaxial Thin Films of the Isotropic Metallic Oxides Sr1–xCaxRuO3 (0 ≤ x ≤ 1)
Chang-Beom Eom,Robert J. Cava,R. M. Fleming,Julia M. Phillips,R. B. vanDover,J. H. Marshall,Julia W. P. Hsu,J. J. Krajewski,W. F. Peck +8 more
TL;DR: In this paper, single-crystal epitaxial thin films of the isotropic metallic oxides Sr1−xCaxRuO3 (0 ≤ x ≤ 1) were grown on miscut SrTiO3(100) substrates in situ by 90° off-axis sputtering.
Journal ArticleDOI
Thermal, magnetic, and transport properties of single-crystal Sr 1 − x Ca x RuO 3 ( 0 x 1 . 0 )
TL;DR: In this article, as-grown, untwinned, orthorhombic single-crystal samples of Ru-O oxides were used for the Hall effect measurement.
Journal ArticleDOI
The role of strain in magnetic anisotropy of manganite thin films
TL;DR: In this article, the importance of the role of strain in La 0.7Sr0.3MnO3 thin films on SrTiO3 and LaGaO3 substrates was shown by revealing the dominance of stress anisotropy effects over magnetocrystalline anisotropic effects in the magnetic properties of these films.
Journal ArticleDOI
Stress-induced effects in epitaxial (La0.7Sr0.3)MnO3 films
C. Kwon,M. C. Robson,K. C. Kim,J. Y. Gu,Samuel E. Lofland,S. M. Bhagat,Z. Trajanovic,M. Rajeswari,Thirumalai Venkatesan,A.R. Kratz,Romel D. Gomez,Ramamoorthy Ramesh +11 more
TL;DR: In this article, the transport and magnetic properties of epitaxial (La07Sr03)MnO3 (LSMO) films deposited on LaAlO3 and SrTiO3 are compared.
Journal ArticleDOI
Thickness dependence of magnetoresistance in La–Ca–Mn–O epitaxial films
Sungho Jin,T. H. Tiefel,M. McCormack,H. M. O’Bryan,Li-Han Chen,Ramamoorthy Ramesh,David Schurig +6 more
TL;DR: The magnetoresistance of La-Ca-Mn-O thin films was investigated in this paper, where the lattice strain was interpreted in terms of lattice deformation.