Výsledky vyhledávání - "Bryan, J. Daniel"

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300 K Ferromagnetic Magnetic Circular Dichroism in Co2+-doped ZnO Activated by Shallow Donors

Autor: Kittilstved, Kevin R., Zhao, Jialong, Liu, William K., Bryan, J. Daniel, Gamelin, Daniel R.

Cobalt-doped ZnO (Co2+:ZnO) films were studied by magnetic circular dichroism (MCD) spectroscopy. A broad 300 K ferromagnetic MCD signal was observed between 1.4 and 4.0 eV after introducing shallow donor states by exposure of paramagnetic Co2+:ZnO f

Externí odkaz: http://arxiv.org/abs/cond-mat/0507121

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Critical Nucleus Size, Composition, and Energetics in the Synthesis of Doped ZnO Quantum Dots

Autor: Bryan, J. Daniel, Schwartz, Dana A., Gamelin, Daniel R.

The influence of Co2+ ions on the homogeneous nucleation of ZnO is examined. Using electronic absorption spectroscopy as a dopant-specific in situ spectroscopic probe, Co2+ ions are found to be quantitatively excluded from the ZnO critical nuclei but

Externí odkaz: http://arxiv.org/abs/cond-mat/0502079

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Strong Room-Temperature Ferromagnetism in Co2+-Doped TiO2 made from Colloidal Nanocrystals

Autor: Bryan, J. Daniel, Heald, Steve M., Chambers, Scott A., Gamelin, Daniel R.

Colloidal cobalt-doped TiO2 (anatase) nanocrystals were synthesized and studied by electronic absorption, magnetic circular dichroism, transmission electron microscopy, magnetic susceptibility, cobalt K-shell X-ray absorption spectroscopy, and extend

Externí odkaz: http://arxiv.org/abs/cond-mat/0407451

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Akademický článek

Nonstoichiometry and chemical purity effects in thermoelectric Ba[sub 8]Ga[sub 16]Ge[sub 30] clathrate.

Autor: Bryan, J. Daniel, Blake, Nick P., Metiu, Horia, Stucky, Galen D., Iversen, Bo B., Poulsen, Rasmus D., Bentien, Anders

Publikováno v: Journal of Applied Physics; 12/15/2002, Vol. 92 Issue 12, p7281, 10p, 1 Black and White Photograph, 7 Charts, 5 Graphs

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Akademický článek

Band structures and thermoelectric properties of the clathrates Ba[sub 8]Ga[sub 16]Ge[sub 30], Sr[sub 8]Ga[sub 16]Ge[sub 30], Ba[sub 8]Ga[sub 16]Si[sub 30], and Ba[sub 8]In[sub 16]Sn[sub 30].

Autor: Blake, Nick P., Latturner, Susan, Bryan, J. Daniel, Stucky, Galen D., Metiu, Horia

Publikováno v: Journal of Chemical Physics; 11/1/2001, Vol. 115 Issue 17, p8060, 14p, 4 Charts, 18 Graphs

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Experimental Charge Densities of Semiconducting Cage Structures Containing Alkaline Earth Guest Atoms

Autor: Bentien, Anders, Palmqvist, Anders E. C., Bryan, J. Daniel, Latturner, Susan, Stucky, Galen D., Furenlid, Lars, Iversen, Bo B.

Publikováno v: Bentien, A, Palmqvist, A E C, Bryan, J D, Latturner, S, Stucky, G D, Furenlid, L & Iversen, B B 2000, ' Experimental Charge Densities of Semiconducting Cage Structures Containing Alkaline Earth Guest Atoms ', Angewandte Chemie International Edition, vol. 39, no. 20, pp. 3613-3616 . https://doi.org/10.1002/1521-3773(20001016)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pure_au_____::8b7faa062d98b915f3c3be0351804fcb
https://pure.au.dk/portal/da/publications/experimental-charge-densities-of-semiconducting-cage-structures-containing-alkaline-earth-guest-atoms(17570c23-0520-45d2-92e2-4ea94d3a7525).html

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Akademický článek

Activation of High-Tc Ferromagnetism in Co²⁺:TiO2 and Cr³⁺:TiO2 Nanorods and Nanocrystals by Grain Boundary Defects.

Autor: Bryan, J. Daniel¹, Santangelo, Steven A.¹, Keveren, Sean C.¹, Gamelin, Daniel R.¹ Gamelin@chem.washington.edu

Publikováno v: Journal of the American Chemical Society. 11/9/2005, Vol. 127 Issue 44, p15568-15574. 7p.

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Akademický článek

Strong Room-Temperature Ferromagnetism in Co²+; Doped TiO2 Made from Colloidal Nanocrystals.

Autor: Bryan, J. Daniel¹, Heald, Steve M.², Chambers, Scott A.², Gamelin, Daniel R.¹ Gamelin@chem.washington.edu

Publikováno v: Journal of the American Chemical Society. 9/22/2004, Vol. 126 Issue 37, p11640-11647. 8p.

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Periodical

Experimental Charge Densities of Semiconducting Cage Structures Containing Alkaline Earth Guest Atoms Work at the X10c beamline at NSLS was supported by the Division of Materials Sciences of the US Department of Energy (DE-AC02-98CH10886). B.B.I. and A.E.C.P. gratefully acknowledge support from the Danish and Swedish Research Councils (SNF, TFR, STINT). This work was partially supported by the Office of Naval Research (G.D.S., J.D.B., S.L., A.E.C.P.), and it made use of MRL Central Facilities supported by the National Science Foundation under Award No. DMR96-32716. Dr. R.L. Paul of NIST is thanked for the Cold Neutron Prompt Gamma Ray Activation Analysis.

Autor: Bentien, Anders, Palmqvist, Anders E. C., Bryan, J. Daniel, Latturner, Susan, Stucky, Galen D., Furenlid, Lars, Iversen, Bo B.

Publikováno v: Angewandte Chemie. International Edition; October 16, 2000, Vol. 39 Issue: 20 p3613-3616, 4p

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Akademický článek

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