Search Results - "Geiger, Charles A"

Crystal Chemistry and Stability of “Li7La3Zr2O12” Garnet: A Fast Lithium-Ion Conductor by Geiger, Charles A, Alekseev, Evgeny, Lazic, Biljana, Fisch, Martin, Armbruster, Thomas, Langner, Ramona, Fechtelkord, Michael, Kim, Namjun, Pettke, Thomas, Weppner, Werner

“…Recent research has shown that certain Li-oxide garnets with high mechanical, thermal, chemical, and electrochemical stability are excellent fast Li-ion…”
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Synthesis and Crystal Chemistry of the Fast Li-Ion Conductor Li7La3Zr2O12 Doped with Fe by Rettenwander, Daniel, Geiger, Charles A, Amthauer, Georg

“…Nominal Li7La3Zr2O12 (LLZO) garnet, doped with 57Fe2O3, was synthesized by sintering oxides and carbonates at T = 1100 °C in air. X-ray powder diffraction…”
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DFT Study of the Role of Al3+ in the Fast Ion-Conductor Li7-3xAl3+xLa3Zr2O12 Garnet by Rettenwander, Daniel, Blaha, Peter, Laskowski, Robert, Schwarz, Karlheinz, Bottke, Patrick, Wilkening, Martin, Geiger, Charles A, Amthauer, Georg

“…We investigate theoretically the site occupancy of Al3+ in the fast-ion-conducting cubic-garnet Li7-3xAl3+xLa3Zr2O12 (Ia-3d) using density functional theory…”
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A low-temperature calorimetric study of synthetic (forsterite + fayalite) {(Mg 2SiO 4 + Fe 2SiO 4)} solid solutions: An analysis of vibrational, magnetic, and electronic contributions to the molar heat capacity and entropy of mixing by Dachs, Edgar, Geiger, Charles A., von Seckendorff, Volker, Grodzicki, Michael

“…The molar heat capacities ( C p,m ) of a series of synthetic forsterite (Fo)–fayalite (Fa), (Mg 2SiO 4 + Fe 2SiO 4), olivines have been measured between 5 K…”
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Recent developments and the future of low‐T calorimetric investigations in the Earth sciences: Consequences for thermodynamic calculations and databases by Geiger, Charles A., Dachs, Edgar

“…Low‐T calorimetry is an experimental science that measures the thermodynamic function heat capacity, Cp(T), from which the standard third‐law entropy…”
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Micro- and nano-size hydrogrossular-like clusters in pyrope crystals from ultra-high-pressure rocks of the Dora-Maira Massif, western Alps by Geiger, Charles A., Rossman, George R.

“…The supracrustal metamorphic rocks of the Dora-Maira Massif, western Alps, have been intensively studied. Certain ultra-high-pressure lithologies contain…”
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Nitrogen Incorporation in Potassic and Micro- and Meso-Porous Minerals: Potential Biogeochemical Records and Targets for Mars Sampling by Nikitczuk, Matthew P, Bebout, Gray E, Geiger, Charles A, Ota, Tsutomu, Kunihiro, Takuya, Mustard, John F, Halldórsson, Sæmundur A, Nakamura, Eizo

“…We measured the N concentrations and isotopic compositions of 44 samples of terrestrial potassic and micro- and meso-porous minerals and a small number of…”
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DFT Study of the Role of Al 3+ in the Fast Ion-Conductor Li 7-3 x Al 3+ x La 3 Zr 2 O 12 Garnet by Rettenwander, Daniel, Blaha, Peter, Laskowski, Robert, Schwarz, Karlheinz, Bottke, Patrick, Wilkening, Martin, Geiger, Charles A, Amthauer, Georg

“…We investigate theoretically the site occupancy of Al in the fast-ion-conducting cubic-garnet Li Al La Zr O ( -3 using density functional theory. By comparing…”
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A calorimetric investigation of A2[(UO2)2(WO5)O] compounds with A=K, Rb and Cs and calculated phase relations in the K2WO4-UO3-H2O and K2MoO4-K2WO4-UO3-H2O systems by Lelet, Maxim I., Borodulina, Maria L., Suleimanov, Evgeny V., Geiger, Charles A., Bosbach, Dirk, Alekseev, Evgeny V.

“…•We determined the low temperature heat capacity of A2[(UO2)2(WO5)O] compounds with A=K, Rb and Cs.•We determined enthalpy of formation of A2[(UO2)2(WO5)O]…”
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A calorimetric investigation of spessartine: Vibrational and magnetic heat capacity by Dachs, Edgar, Geiger, Charles A., Withers, Anthony C., Essene, Eric J.

“…The heat capacity ( C p ) of two synthetic spessartine samples (Sps) was measured on 20–30 mg-size samples in the temperature range 2–864 K by relaxation…”
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A calorimetric and thermodynamic investigation of A2[(UO2)2(MoO4)O2] compounds with A=K and Rb and calculated phase relations in the system (K2MoO4+UO3+H2O) by Lelet, Maxim I., Suleimanov, Evgeny V., Golubev, Aleksey V., Geiger, Charles A., Bosbach, Dirk, Alekseev, Evgeny V.

“…•We determined the low temperature heat capacity of A2[(UO2)2(MoO4)O2] compounds with A=K and Rb.•We determined enthalpy of formation of K2[(UO2)2(MoO4)O2] by…”
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Thermodynamic properties and behaviour of A2[(UO2)(MoO4)2] compounds with A=Li, Na, K, Rb, and Cs by Lelet, Maxim I., Suleimanov, Evgeny V., Golubev, Aleksey V., Geiger, Charles A., Depmeier, Wulf, Bosbach, Dirk, Alekseev, Evgeny V.

“…•Low temperature heat capacity of A2[(UO2)(MoO4)2] (A=Li, Na, K, Rb, and Cs) series was determined.•Enthalpy of formation of Li2[(UO2)(MoO4)2] was determined…”
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A calorimetric and thermodynamic investigation of potassium uranyl tungstate K2[(UO2)(W2O8)] by Lelet, Maxim I., Ogurtsova, Olga V., Suleimanov, Evgeny V., Geiger, Charles A., Depmeier, Wulf, Alekseev, Evgeny V.

“…► We determined the low temperature heat capacity of K2[(UO2)(W2O8)] using adiabatic calorimetry. ► We determined enthalpy of formation of K2[(UO2)(W2O8)] by…”
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A calorimetric and thermodynamic investigation of uranyl molybdate UO2MoO4 by Suleimanov, Evgeny V., Golubev, Aleksey V., Alekseev, Evgeny V., Geiger, Charles A., Depmeier, Wulf, Krivovichev, Vladimir G.

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Cordierite IV: structural heterogeneity and energetics of Mg?Fe solid solutions by Geiger, Charles A., Grams, Mathias

“…The local structural heterogeneity and energetic properties of 22 natural Mg-Fe cordierites, ideal formula (Mg,Fe)2Al4Si5O18.x(H2O,CO2), were investigated at…”
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Molecular H2O in armenite, BaCa2Al6Si9O30·2H2O, and epididymite, Na2Be2Si6O15·H2O: Heat capacity, entropy and local-bonding behavior of confined H2O in microporous silicates by Geiger, Charles A., Dachs, Edgar, Dalconi, Maria Chiara, Artioli, Gilberto

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Cordierite III: the site occupation and concentration of Fe3 by Geiger, Charles A., Rager, Helmut, Czank, Michael

“…Cordierite has the ideal formula (Mg,Fe)2-Al4Si5O18 x(H2O,CO2), but it must contain some Fe3+ to account for its blue color and strong pleochroism. The site…”
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A Synthesis and Crystal Chemical Study of the Fast Ion Conductor Li7–3xGaxLa3 Zr2O12 with x = 0.08 to 0.84 by Rettenwander, Daniel, Geiger, Charles A., Tribus, Martina, Tropper, Peter, Amthauer, Georg

“…Fast-conducting phase-pure cubic Ga-bearing Li 7 La 3 Zr 2 O 12 was obtained using solid-state synthesis methods with 0.08 to 0.52 Ga 3+ pfu in the garnet. An…”
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Structural locations of the iron ions in cordierite: a spectroscopic study by Khomenko, Vladimir M., Langer, Klaus, Geiger, Charles A.

“…A study was undertaken to determine the site locations of Fe2+ and Fe3+ in cordierite using a combination of single-crystal electronic and Mossbauer…”
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Heat capacity measurements of synthetic pyrope-grossular garnets between 320 and 1000 K by differential scanning calorimetry by Bosenick, Anne, Geiger, Charles A., Cemič, Lado

“…The heat capacity of synthetic periclase (MgO), pyrope (M93Al2Si3O12), grossular (Ca3Al2Si3O12), and four pyrope-grossular solid solutions (PY89.8Gr10.2,…”
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