Magnetically-and electrically-induced variable resistance...

Compositions – Electrolytes for electrical devices

Reexamination Certificate

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C252S062570, C252S500000, C252S518100, C338S03200R, C257S295000, C257S427000, C428S392000, C428S900000, C360S313000

Reexamination Certificate

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10390362

ABSTRACT:
Provided are new compositions of ruthenates in the pervoskite and layered pervoskite family, wherein the ruthenate compositions exhibit large magnetoresistance (MR) and electric-pulse-induced resistance (EPIR) switching effects, the latter observable at room temperature. This is the first time large MR and EPIR effects have been shown together in ruthenate compositions. Further provided are methods for synthesizing the class of ruthenates that exhibits such properties, as well as methods of use therefor in electromagnetic devices, thin films, sensors, semiconductors, insulators and the like.

REFERENCES:
patent: 3330697 (1967-07-01), Pechini
patent: 3897367 (1975-07-01), Lauder
patent: 4814107 (1989-03-01), Steinberg
patent: 5759434 (1998-06-01), Shimakawa et al.
patent: 5939354 (1999-08-01), Golden
patent: 5977017 (1999-11-01), Golden et al.
patent: 6204139 (2001-03-01), Liu et al.
patent: 6403441 (2002-06-01), Takehiro et al.
patent: 6473332 (2002-10-01), Ignatiev et al.
patent: 2002/0030945 (2002-03-01), Odagawa et al.
patent: PCT/IB00/0043 (2000-08-01), None
Gausepohl et al, “Magnetoresitance properties of thin films of the metallic oxide of ferromagnet SrRuO3,” Phys. Rev.B., 1995, 52(5), pp. 3459-3465.
Battle, P.D., Gibb, T.C., Jones, C.W., and Studer, F., “Spin-glass behavior in Sr2FeRuO6and BaLaNiRuO6: A comparison with antiferromagnetic BaLaZnRuO6,”J. Solid State Chem. 78:281-293 (1989).
Beck, A., J.G. Bednorz, Ch. Gerber, C. Rossel and D. Widmer, “Reproducible switching effect in thin oxide films for memory applications,”Appl. Phys. Lett. 77(1):139-141 (2000).
Choi, J., C. B. Eom, G. Rijinders, H. Rogalla, and R. H. A. Blank, “Growth mode from layer by layer to step flow during the growth of heteroepitaxial SrRuO3on (001) SrTiO3,”Appl. Phys. Lett. 79:1447-1449 (2001).
Eom, C.B., R. B. Van Dover, J. M. Phillips, D. J. Werder, J. H. Marshall, C. H. Chen, R. Cava, J. R. M. Fleming, D. and K. Fork, “Fabrication and properties of epitaxial ferroelectric heterostructures with SrRuO3isotropic metallic oxide electrodes,”Appl. Phys. Lett. 63:2570-2572 (1993).
Eom, C.B., R. J. Cava, R. M. Fleming, J. M. Phillips, R. B. Van Dover, J. H. Marshall, J. Hsu, W.P., J. J. Krajewski, W. F. and Peck, Jr., “Single-crystal epitaxial thin films of the isotropic metallic oxides Sr1−xCaxRuO3(x between 0 and 1),”Science258:1766-1769 (1992).
Gausephol, S.C., M. Lee, K. Char, R. A. Rao, and C. B. Eom, “Magnetoresistance properties of thin films of the metallic oxide ferromagnet SrRuO3,”Phys. Rev. B52:3459-3462 (1995).
Hamada, N., H. Sawada, and K. Terakura, inSpectroscopy of Mott Insulators and Correlated Metals, (eds. A. Fujimori and Y. Tokura), Springer, Berlin 119:95-105 (1995).
He, T., and R. J. Cava, “Disorder-induced ferromagnetism in CaRuO3,”Phys. Rev. B63:172403-1-172403-4 (2001).
He, T., and R. J. Cava, “The effect of Ru-site dopants on the magnetic properties of CaRuO3,”J. Phys.: Condens. Matter13:8347-8361 (2001).
Kim, S.H., and P. D. Battle, “Structural and electronic properties of the mixed co-ru perovskites AA′CoRuO6(A,A′=Sr, Ba, La),”J. Solid State Chem. 114:174-183 (1995).
Klein, L., A.F. Marshall, J.W. Reiner, C.H. Ahn, T.H. Geballe, M.R. Beasley, and A. Kapitulnik, “Large magenetoresistance of single-crystal films of ferromagnetic SrRuO3,”J. Magn. Mater. 188:319-325 (1998).
Kobayashi, K.I., T. Kimura, H. Sawada, K. Terakura, Y. Tokura, “Room-temperature magnetoresistance in an oxide material with an ordered double-perovskite structure,”Nature395:677-680 (1998).
Liu, S.Q., N.J. Wu, and A. Ignatiev, “Electric-pulse-induced reversible resistance change effect in magnetoresistive films,”Applied Physics Letters, 76(19): 2740-2752 (2000).
Longo, J.M., P. M. Raccah, and J. B. Goodenough, “Magnetic properties of SrRuO3and CaRuO3,”J. Appl. Phys. 39:1327-1328 (1968).
Maeno, Y., H. Hashimoto, K. Yoshida, S. Nishizaki, T. Fujita, J. G. Bednorz, and F. Lichtenberg, “Superconductivity in a layered perovskite without copper,”Nature372:532-534 (1994).
Mamchik, A., and I-W. Chen, “Large magnetoresistance in magnetically frustrated ruthenate perovskites,”Appl. Phys. Lett., 82: 613-615 (2003).
Mazin, I., and D. J. Singh, “Electronic structure and magnetism in Ru-based perovskites,”Phys. Rev. B56:2556-2571 (1997).
I. Mazin, D. A. Papaconstantopoulos, and D. J. Singh, “Tight-binding hamiltonians for Sr-filled ruthenates: application to the gap anistropy and hall coefficient in Sr2RuO4,”Phys. Rev. B61:5223-5228 (2000).
Ramirez, A.P., “Colossal magnetoresistance,”J. Phys.: Condens. Matter9:8171-8199 (1997).
Raveau, B, A. Maignan, C. Martin, and M. Hervieu, “Ru doping of perovskite manganites: an effective route to ferromagnetism, metallicity, and CMR,”J. Supercond. 14:217-229 (2001).
Rossel, C., G.I. Meijer, D. Bremaud and D. Widmer, “Electrical current distribution across a metal-insulator-metal structure during bistable switching,”J. Appl. Phys. 90(6):2892-2898 (2001).
Tiwari, P., X. D. Wu, S. R. Foltyn, M. Q. Le, I. H. Campbell, R. C. Dye, and R. E. Muenchausen, “Epitaxial YBa2Cu3O7−deltathin-films on SrRuO3/Pt/MgO,”Appl. Phys. Lett. 64:634-636 (1994).
Y. Watanabe, J.G. Bednorz, A. Bietsch, Ch. Gerber, D. Widmer, A. Beck and S.J. Wind, “Current-driven insulator-conductor transition and nonvolatitle memory in chromium-doped SrTiO3single crystals,”Appl. Phys. Lett. 78(23):3738-3740 (2001).

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