Thin films of epitaxial SrTiO3 grown on silicon exhibit compressive in-plane strain that may stabilize ferroelectricity in this normally non-ferroelectric material. We investigate this possibility by using an ultra-high vacuum atomic force microscope to measure the local force response of coherently strained SrTiO3 films on silicon to an applied ac electric field. The observed cantilever response is different in regions that were previously written with positive and negative voltages, but the frequency dependence of this response indicates that the dominant forces are related to electrostatic charging rather than ferroelectricity. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4750243]
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Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Baik, Seung Jae
Lim, Koeng Su
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Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Lim, Koeng Su
Choi, Wonsup
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Kookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Choi, Wonsup
Yoo, Hyunjun
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Kookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Yoo, Hyunjun
Lee, Jang-Sik
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Kookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Lee, Jang-Sik
Shin, Hyunjung
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Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
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Univ Tunis El Manar, Fac Sci Tunis, Dept Phys, Lab Phys Matiere Condensee, Tunis 2092, TunisiaUniv Tunis El Manar, Fac Sci Tunis, Dept Phys, Lab Phys Matiere Condensee, Tunis 2092, Tunisia
Ouerghui, W.
Saghrouni, H.
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Univ Sousse, Higher Sch Sci & Technol Hammam Sousse, Lab Energy & Mat LR11ES34, St Lamine Abbassi, Hammam Sousse 4011, Tunisia
Al Baha Univ, Dept Phys Arts Baljurashi, Al Baha, Saudi ArabiaUniv Tunis El Manar, Fac Sci Tunis, Dept Phys, Lab Phys Matiere Condensee, Tunis 2092, Tunisia
Saghrouni, H.
Beji, L.
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Univ Sousse, Higher Sch Sci & Technol Hammam Sousse, Lab Energy & Mat LR11ES34, St Lamine Abbassi, Hammam Sousse 4011, Tunisia
Qassim Univ, Coll Sci & Arts, Dept Phys, Ar Rass 51921, Qassim, Saudi ArabiaUniv Tunis El Manar, Fac Sci Tunis, Dept Phys, Lab Phys Matiere Condensee, Tunis 2092, Tunisia
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Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Baik, Seung Jae
Lim, Koeng Su
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Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Lim, Koeng Su
Choi, Wonsup
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Kookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Choi, Wonsup
Yoo, Hyunjun
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Kookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Yoo, Hyunjun
Lee, Jang-Sik
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Kookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Lee, Jang-Sik
Shin, Hyunjung
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Kookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South KoreaKookmin Univ, Ctr Mat & Proc Self Assembly, Seoul 136702, South Korea
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Univ Tunis El Manar, Fac Sci Tunis, Dept Phys, Lab Phys Matiere Condensee, Tunis 2092, TunisiaUniv Tunis El Manar, Fac Sci Tunis, Dept Phys, Lab Phys Matiere Condensee, Tunis 2092, Tunisia
Ouerghui, W.
Saghrouni, H.
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Univ Sousse, Higher Sch Sci & Technol Hammam Sousse, Lab Energy & Mat LR11ES34, St Lamine Abbassi, Hammam Sousse 4011, Tunisia
Al Baha Univ, Dept Phys Arts Baljurashi, Al Baha, Saudi ArabiaUniv Tunis El Manar, Fac Sci Tunis, Dept Phys, Lab Phys Matiere Condensee, Tunis 2092, Tunisia
Saghrouni, H.
Beji, L.
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机构:
Univ Sousse, Higher Sch Sci & Technol Hammam Sousse, Lab Energy & Mat LR11ES34, St Lamine Abbassi, Hammam Sousse 4011, Tunisia
Qassim Univ, Coll Sci & Arts, Dept Phys, Ar Rass 51921, Qassim, Saudi ArabiaUniv Tunis El Manar, Fac Sci Tunis, Dept Phys, Lab Phys Matiere Condensee, Tunis 2092, Tunisia