Results 261 to 270 of about 4,280,236 (294)

Magnetic exchange interactions in perovskite solid solutions. Part 3. Tin-119 Mössbauer spectra of doped iron perovskite solid solutions

J. Chem. Soc., Dalton Trans., 1983
A detailed study has been made of supertransferred hyperfine field (s.t.h.f.) effects at 119Sn doped into various perovskites with the formula (A0.95Ca0.05)(Fe0.85M0.10Sn0.05)O3 with A = La, Eu, or Lu and M = Al, Ga, Sc, Cr, Mn, Co, or Ni. The observed s.t.h.f.
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Planar Defects and Incommensurate Phases in Highly Ordered Perovskite Solid Solutions

Physical Review Letters, 2002
A first-principles-derived approach is used to study the effects of planar defects on structural properties of a rocksalt-ordered Pb(Sc0.5Nb0.5)O3 alloy. These defects lead to unusual features, including a less symmetrical ground state with respect to the perfectly ordered material.
Igor A, Kornev, L, Bellaiche
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Oxyhydrides of (Ca,Sr,Ba)TiO₃ Perovskite Solid Solutions

Inorganic Chemistry, 2012
The oxyhydride solid solutions (Ca,Sr)TiO(3-x)H(x) and (Sr,Ba)TiO(3-x)H(x) have been prepared by reducing the corresponding ATiO(3) oxides with calcium hydride. Under the reaction conditions examined, a hydride content of x = 0.1-0.3 was obtained for all compositions. Compared to our previous result with BaTiO(3-x)H(x), the larger particle size in this
Tatsunori Sakaguchi, Yoji Kobayashi, Takeshi Yajima, Masatoshi Ohkura, Cédric Tassel, Fumitaka Takeiri, Shingo Mitsuoka, Hiroshi Ohkubo, Takafumi Yamamoto, Jung eun Kim, Naruki Tsuji, Akihiko Fujihara, Yoshitaka Matsushita, James Hester, Maxim Avdeev, Kenji Ohoyama, Hiroshi Kageyama   +16 more
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Investigations on magnetically diluted KNixMg1–xF3 perovskite solid solution

Physica Status Solidi (a), 1988
The magnetic properties and EPR spectra of magnetically diluted KNixMg1−xF3 perovskite solid solutions are examined. The susceptibility measurements show that these compounds are isotropic antiferromagnetic materials at high nickel concentrations. A critical concentration is found to be x = 0.4.
D. Skrzypek, K. Bialas-Borgiel, Z. Celiński   +2 more
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Electrophysical properties of perovskite solid solutions in the system CaTiO3−La2O3

Refractories and Industrial Ceramics, 1998
The electrophysical properties of perovskite solid solutions in the system CaTiO3−La2O3 were investigated in the La2O3 concentration range of 0–40%. The composition dependences of permittivity, loss tangent, volume resistivity, and temperature coefficient of capacitance were plotted.
V. I. Strakhov, A. P. Pivovarova, V. A. Saltykova, O. V. Mel’nikova, N. E. Semenov   +4 more
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Phase Transitions in Perovskite Solid Solutions with Incipient Ferroelectrics

Ferroelectrics, 2004
The impurity-induced ferroelectric phase transitions in incipient perovskite ferroelectrics are discussed along with improper ferroelastic phase transitions. It is shown that the critical concentration of impurities is proportional to 1/ϵ3/2 and that the ferroelectric phase transitions probably suppress ferroelastic transitions.
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Nonstoichiometry of the perovskite-type solid solution La0.9Ca0.1Cr1−Al O3−

Solid State Ionics, 2006
Abstract Nonstoichiometry of the perovskite-type solid solutions La0.9Ca0.1Cr1−yAlyO3−δ was studied by high-temperature gravimetry under controlled P(O2) atmospheres of 1–10− 23 bar at 1073–1273 K. The observed data were described by a regular solution-like model for the randomly distributed defects of VO¨ , CrCr. , CaLa,, and AlCrX.
Junichiro Mizusaki, Mamoru Hasegawa, Keiji Yashiro, Hiroshige Matsumoto, Tatsuya Kawada   +4 more
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Microheterogeneous Solid Solutions in Perovskites: Formation, Microstructure, and Catalytic Activity

ChemInform, 2004
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
L. A. Isupova, S. V. Tsybulya, G. N. Kryukova, V. A. Rogov, I. S. Yakovleva, V. A. Sadykov   +5 more
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Phase transitions in ferroelectric solid solutions of complex perovskites

Ferroelectrics, 1989
Abstract The phenomenological theory of ferro- and antiferroelectric solid solutions is proposed taking into account the possibility of compositional order variation. Complex perovskites AB′0.5B″0.5O3 where one of the cations is substituted are considered.
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Catalytic oxidation of CO on LaMn1−xFexO3 perovskites solid solution

Journal of Molecular Catalysis A: Chemical, 2014
Abstract Catalytic CO oxidation was studied over LaMn1−xFexO3 perovskites prepared by co-precipitation and rotor-vapor citrate method. The catalysts were characterized by X-ray diffraction (XRD), Transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS).
Saijing Zheng, Qing Hua, Wenbo Gu, Baizhan Liu   +3 more
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