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Dive into the research topics where Joan Siewenie is active.

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Featured researches published by Joan Siewenie.


Physical Review B | 1999

Structure-properties phase diagram forLa1−xSrxMnO3(0.1<~x<~0.2)

B. Dabrowski; X. Xiong; Z. Bukowski; R. Dybzinski; P. W. Klamut; Joan Siewenie; Omar Chmaissem; James P. Shaffer; C. W. Kimball; J. D. Jorgensen; S. Short

By combining the results of magnetization, resistivity, and neutron powder-diffraction data for stoichiometric


ACS Applied Materials & Interfaces | 2015

Average and Local Structure, Debye Temperature, and Structural Rigidity in Some Oxide Compounds Related to Phosphor Hosts

Kristin A. Denault; Jakoah Brgoch; Simon D Kloss; Michael W. Gaultois; Joan Siewenie; Katharine Page; Ram Seshadri

{\mathrm{La}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{MnO}}_{3},


Physical Review B | 2014

Structure and composition of the superconducting phase in alkali iron selenide K y Fe 1.6 + x Se 2

Scott V. Carr; Despina Louca; Joan Siewenie; Q. Huang; Aifeng Wang; Xianhui Chen; Pengcheng Dai

we have constructed a phase diagram that describes the magnetic, transport, and structural properties and the relationships among them as a function of composition


Journal of the American Chemical Society | 2012

Systematic Study of Compositional and Synthetic Control of Vacancy and Magnetic Ordering in Oxygen-Deficient Perovskites Ca2Fe2–xMnxO5+yand CaSrFe2–xMnxO5+y (x = 1/2, 2/3, and 1; y = 0–1/2)

Farshid Ramezanipour; J.E. Greedan; Lachlan M. D. Cranswick; V. Ovidiu Garlea; Ronald L. Donaberger; Joan Siewenie

(0.1l~xl~0.2)


Angewandte Chemie | 2016

Short-Range Order of Methylammonium and Persistence of Distortion at the Local Scale in MAPbBr3 Hybrid Perovskite

Katharine Page; Joan Siewenie; Paolo Quadrelli; Lorenzo Malavasi

and temperature (10--340 K). We show that, with increasing Sr content, the Curie temperature increases linearly, while the temperature of an orbital ordering transition to a state with a large coherent Jahn-Teller (JT) distortion decreases. These two phase-transition lines cross at


Journal of Materials Chemistry | 2012

The effect of the B-site cation and oxygen stoichiometry on the local and average crystal and magnetic structures of Sr2Fe1.9M0.1O5+y (M = Mn, Cr, Co; y = 0, 0.5)

Farshid Ramezanipour; J.E. Greedan; Lachlan M. D. Cranswick; V. Ovidiu Garlea; Joan Siewenie; Graham King; Anna Llobet; Ronald L. Donaberger

x=0.145


Journal of the Physical Society of Japan | 2010

Ionic conductivity and structural properties of lithium lanthanum titanate quenched into liquid nitrogen studied by neutron powder diffraction

Kazuhiro Mori; Kenji Iwase; Masao Yonemura; Joan Siewenie; Thomas Proffen; Yohei Onodera; Keiji Itoh; Masaaki Sugiyama; Takashi Kamiyama; Toshiharu Fukunaga

and


Review of Scientific Instruments | 2014

Pressure/temperature fluid cell apparatus for the neutron powder diffractometer instrument: Probing atomic structure in situ

Hsiu Wen Wang; Victor R. Fanelli; Helmut M. Reiche; Eric Larson; Mark A. Taylor; Hongwu Xu; Jinlong Zhu; Joan Siewenie; Katharine Page

T=210\mathrm{K}.


Physical Review B | 1999

Structure-properties phase diagram for La{sub 1-x}Sr{x}MnO{sub 3} (0.1{le}x{le}0.2).

B. Dabrowski; X. Xiong; Z. Bukowski; R. Dybzinski; P. W. Klamut; Joan Siewenie; Omar Chmaissem; James P. Shaffer; C. W. Kimball; J. D. Jorgensen; S. Short

When the transition to the ferromagnetic state occurs in a phase that has a large coherent JT distortion


Physical Review B | 1999

Structure-properties phase diagram for La{sub 1{minus}x}Sr{sub x}MnO{sub 3} (0.1{le}x{le}0.2)

B. Dabrowski; X. Xiong; Z. Bukowski; R. Dybzinski; P. W. Klamut; Joan Siewenie; Omar Chmaissem; James P. Shaffer; C. W. Kimball; J. D. Jorgensen; S. Short

(xl0.145),

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Katharine Page

Oak Ridge National Laboratory

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B. Dabrowski

Northern Illinois University

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C. W. Kimball

Northern Illinois University

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J. D. Jorgensen

Argonne National Laboratory

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Omar Chmaissem

Northern Illinois University

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P. W. Klamut

Northern Illinois University

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S. Short

Argonne National Laboratory

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Sven C. Vogel

Los Alamos National Laboratory

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X. Xiong

Northern Illinois University

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