Munn, Alexis S. , Clarkson, Guy J. and Walton, Richard I.. (2014) Distortions of a flexible metal-organic framework from substituted pendant ligands. Acta Crystallographica Section B structural Science, Crystal Engineering and Materials, Volume 70 (Number 1). pp. 11-18. ISSN 2052-5206

Zhang, Kou-Lin, Zhang, Jing-Bo, Jing, Chu-Yue, Zhang, Lei, Walton, Richard I., Zhu, Peizhi and Ng, Seik Weng. (2014) Synthesis, structures and properties of a family of four two-dimensional coordination polymers constructed from 5-hydroxyisophthalate. Journal of Solid State Chemistry, Volume 211 . pp. 8-20. ISSN 0022-4596

Daniels, Luke M., Weber, Mads. C., Lees, Martin R., Guennou, Mael, Kashtiban, Reza J., Sloan, Jeremy, Kreisel, Jens and Walton, Richard I.. (2013) Structures and magnetism of the rare-earth orthochromite perovskite solid solution LaxSm1–xCrO3. Inorganic Chemistry, Volume 52 (Number 20). pp. 12161-12169. ISSN 0020-1669

Deng, Ye, Hou, Chuan-Tao, Walton, Richard I., Tang, Jiaqian, Zhu, Peizhi, Zhang, Kou-Lin and Ng, Seik Weng. (2013) Preparation, structural diversity and characterization of a family of Cd(ii)–organic frameworks. Dalton Transactions, Volume 42 (Number 34). pp. 12468-12480. ISSN 1477-9226

Frigoli, Michel, El Osta, Racha, Marrot, Jérôme, Medina, Manuela E., Walton, Richard I. and Millange, Franck. (2013) Heterobimetallic Sodium-Lithium Based Metal-Organic Framework Showing the β-Cristobalite Topology and Having High Permanent Porosity. European Journal of Inorganic Chemistry, Volume 2013 (Number 7). pp. 1138-1141. ISSN 1434-1948

Playford, Helen Y., Hannon, Alex C., Barney, Emma R. and Walton, Richard I.. (2013) Structures of uncharacterised polymorphs of gallium oxide from Total neutron diffraction. Chemistry - A European Journal, Volume 19 (Number 8). pp. 2803-2813. ISSN 0947-6539

Van de Voorde, Ben, Munn, Alexis S., Guillou, Nathalie, Millange, Franck, De Vos, Dirk E. and Walton, Richard I.. (2013) Adsorption of N/S heterocycles in the flexible metal–organic framework MIL-53(FeIII) studied by in situ energy dispersive X-ray diffraction. Physical Chemistry Chemical Physics, Volume 15 (Number 22). Article number 8606. ISSN 1463-9076

El Osta, Racha, Feyand, Mark, Stock, Norbert, Millange, Franck and Walton, Richard I.. (2013) Crystallisation kinetics of metal organic frameworks from in situ time-resolved x-ray diffraction. Powder Diffraction, Volume 28 (Number S2). S256-S275. ISSN 0885-7156

Callear, Samantha K., Ramirez-Cuesta, Anibal J., David, William I.F., Millange, Franck and Walton, Richard I.. (2013) High-resolution inelastic neutron scattering and neutron powder diffraction study of the adsorption of dihydrogen by the Cu(II) metal–organic framework material HKUST-1. Chemical Physics , Volume 427 . pp. 9-17. ISSN 0301-0104

Munn, Alexis S., Ramirez-Cuesta, Anibal J., Millange, Franck and Walton, Richard I.. (2013) Interaction of methanol with the flexible metal-organic framework MIL-53(Fe) observed by inelastic neutron scattering. Chemical Physics , Volume 427 . pp. 30-37. ISSN 0301-0104

Munn, Alexis S., Clarkson, Guy J., Millange, Franck, Dumont, Yves and Walton, Richard I.. (2013) M(ii) (M = Mn, Co, Ni) variants of the MIL-53-type structure with pyridine-N-oxide as a co-ligand. CrystEngComm, Volume 15 (Number 45). pp. 9679-9687. ISSN 1466-8033

Nouar, Farid, Devic, Thomas, Chevreau, Hubert, Guillou, Nathalie, Gibson, Emma, Clet, Guillaume, Daturi, Marco, Vimont, Alexandre, Grenèche, Jean Marc, Breeze, Matthew I., Walton, Richard I., Llewellyn, Philip L. and Serre, Christian. (2012) Tuning the breathing behaviour of MIL-53 by cation mixing. Chemical Communications, Volume 48 (Number 82). pp. 10237-10239. ISSN 1359-7345

El Osta, Racha, Carlin-Sinclair, Abel, Guillou, Nathalie, Walton, Richard I., Vermoortele, Frederik, Maes, Michaël, de Vos, Dirk and Millange, Franck. (2012) Liquid-Phase Adsorption and Separation of Xylene Isomers by the Flexible Porous Metal–Organic Framework MIL-53(Fe). Chemistry of Materials, Volume 24 (Number 14). pp. 2781-2791. ISSN 0897-4756

Amri, Mahrez, Ashbrook, Sharon E., Dawson, Daniel M., Griffin, John M., Walton, Richard I. and Wimperis, Stephen. (2012) A multinuclear solid-state NMR study of templated and calcined chabazite-type GaPO-34. The Journal of Physical Chemistry Part C: Nanomaterials, Interfaces and Hard Matter, Volume 116 (Number 28). pp. 15048-15057. ISSN 1932-7447

Sardar, Kripasindhu and Walton, Richard I.. (2012) Hydrothermal synthesis map of bismuth titanates. Journal of Solid State Chemistry, Vol.189 . pp. 32-37. ISSN 0022-4596

Fisher, Robin D., Hanna, John V., Rees, Gregory J. and Walton, Richard I.. (2012) Calcium sulfate-phosphate composites with enhanced water resistance. Journal of Materials Chemistry, Vol.22 (No.11). pp. 4837-4846. ISSN 0959-9428

El Osta, Racha, Frigoli, Michel, Marrot, Jérôme, Medina, Manuela E., Walton, Richard I. and Millange, Franck. (2012) Synthesis, structure, and crystallization study of a layered lithium thiophene-dicarboxylate. Crystal Growth & Design, Vol.12 (No.3). pp. 1531-1537. ISSN 1528-7483

Sardar, Kripasindhu, Hong, Jiawang, Catalan, Gustau, Biswas, P. K. (Pabitra K.), Lees, Martin R., Walton, Richard I., Scott, James F and Redfern, Simon A T. (2012) Structural, spectroscopic, magnetic and electrical characterization of Ca-doped polycrystalline bismuth ferrite, Bi1−xCaxFeO3−x/2(x≤ 0.1). Journal of Physics: Condensed Matter, Vol.24 (No.4). 045905. ISSN 0953-8984

Sardar, Kripasindhu, Ball, Sarah C., Sharman, Jonathan D. B., Thompsett, David, Fisher, Janet M., Smith, Richard A. P., Biswas, P. K. (Pabitra K.), Lees, Martin R., Kashtiban, Reza J., Sloan, Jeremy and Walton, Richard I.. (2012) Bismuth rridium oxide oxygen evolution catalyst from hydrothermal synthesis. Chemistry of Materials, Volume 24 (Number 21). pp. 4192-4200. ISSN 0897-4756

O'Brien, Aoife, Woodward, David I., Sardar, Kripasindhu, Walton, Richard I. and Thomas, Pam A. (2012) Inference of oxygen vacancies in hydrothermal Na0.5Bi0.5TiO3. Applied Physics Letters, Vol.101 (No.14). p. 142902. ISSN 1077-3118

Gimeno-Fabra, Miquel, Munn, Alexis S., Stevens, Lee A., Drage, Trevor C., Grant, David M., Kashtiban, Reza J., Sloan, Jeremy, Lester, Edward and Walton, Richard I.. (2012) Instant MOFs : continuous synthesis of metal–organic frameworks by rapid solvent mixing. Chemical Communications, Vol.48 (No.86). pp. 10642-10644. ISSN 1359-7345

Ma, Chao, Qin, Yuanbin, Yang, Huaixin, Tian, Huanfang, Li, Jianqi, Sardar, Kripasindhu, Walton, Richard I., Su, Dong, Wu, Lijun and Zhu, Yimei. (2012) Microstructure and oxidation states in multiferroic Lu2(Fe,Mn)3O7. Journal of Applied Physics, Volume 112 (Number 9). Article number 094105. ISSN 0021-8979

Osta, Racha El, Frigoli, Michel, Marrot, Jérôme, Guillou, Nathalie, Chevreau, Hubert, Walton, Richard I. and Millange, Franck. (2012) A lithium–organic framework with coordinatively unsaturated metal sites that reversibly binds water. Chemical Communications, Vol.48 (No.86). pp. 10639-10641. ISSN 1359-7345

Johnston, Karen E., Griffin, John M., Walton, Richard I., Dawson, Daniel M., Lightfoot, Philip and Ashbrook, Sharon E.. (2011) 93Nb NMR and DFT investigation of the polymorphs of NaNbO3. Physical Chemistry Chemical Physics, Vol.13 (No.16). p. 7565. ISSN 1463-9076

Walton, Richard I., Sardar, Kripasindhu, Playford, Helen Y., Modeshia, Deena R., Darton, Richard, Fisher, J. (Janet) and Thompsett, David. (2011) Controlled hydrothermal synthesis of complex mixed oxides using solution redox chemistry. MRS Proceedings, Vol.1309 . ISSN 1946-4274

Sardar, Kripasindhu, Lees, Martin R., Kashtiban, Reza J., Sloan, Jeremy and Walton, Richard I.. (2011) Direct hydrothermal synthesis and physical properties of rare-earth and yttrium orthochromite perovskites. Chemistry of Materials, Vol.23 (No.1). pp. 48-56. ISSN 0897-4756

Fisher, Robin D., Mbogoro, Michael M., Snowden, Michael E., Joseph, Maxim B., Covington, James A., 1973-, Unwin, Patrick R. and Walton, Richard I.. (2011) Dissolution kinetics of polycrystalline calcium sulfate-based materials : influence of chemical modification. ACS Applied Materials & Interfaces, Vol.3 (No.9). pp. 3528-3537. ISSN 1944-8244

Guillou, Nathalie, Millange, Franck and Walton, Richard I.. (2011) Rapid and reversible formation of a crystalline hydrate of a metal-organic framework containing a tube of hydrogen-bonded water. Chemical Communications, Vol.47 (No.2). pp. 713-715. ISSN 1359-7345

Walton, Richard I.. (2011) Solvothermal synthesis of cerium oxides. Progress in Crystal Growth and Characterization of Materials, Vol.57 (No.4). pp. 93-108. ISSN 0960-8974

Playford, Helen Y., Modeshia, Deena R., Barney, Emma R., Hannon, Alex C., Wright, Christopher S., Fisher, Janet M., Amieiro-Fonseca, Alvaro, Thompsett, David, O’Dell, Luke A., Rees, Gregory J., Smith, Mark E., Hanna, John V. and Walton, Richard I.. (2011) Structural characterization and redox catalytic properties of cerium(IV) pyrochlore oxides. Chemistry of Materials, Vol.23 (No.24). pp. 5464-5473. ISSN 0897-4756

Sardar, Kripasindhu, Fisher, Janet M., Thompsett, David, Lees, Martin R., Clarkson, Guy J., Sloan, Jeremy, Kashtiban, Reza J. and Walton, Richard I.. (2011) Structural variety in iridate oxides and hydroxides from hydrothermal synthesis. Chemical Science, Vol.2 (No.8). pp. 1573-1578. ISSN 2041-6520

Matusiewicz, A., Walton, Richard I., Witkowski, S., Kowalczyk, A. (Andrzej), Węgrzyn, A. and Chmielarz, L.. (2011) Studies of Zn-Al-Ce mixed oxides as catalysts for diesel soot combustion. Annales Universitatis Mariae Curie-Sklodowska. Sectio AA. Chemia, Vol.65 (No.1). pp. 45-54. ISSN 0137-6853

Walton, Richard I., Munn, Alexis S., Guillou, Nathalie and Millange, Franck. (2011) Uptake of liquid alcohols by the flexible FeIII metal-organic framework MIL-53 observed by time-resolved in Situ X-ray diffraction. Chemistry - A European Journal, Vol.17 (No.25). pp. 7069-7079. ISSN 0947-6539

Millange, Franck, El Osta, Racha, Medina, Manuela E. and Walton, Richard I.. (2011) A time-resolved diffraction study of a window of stability in the synthesis of a copper carboxylate metal-organic framework. CrystEngComm, Vol.13 (No.1). pp. 103-108. ISSN 1466-8033

Muñoz-Rojas, David, Córdoba, Rosa, Fernández-Pacheco, Amalio, De Teresa, José María, Sauthier, Guillaume, Fraxedas, Jordi, Walton, Richard I. and Casañ-Pastor, Nieves. (2010) High conductivity in hydrothermally grown AgCuO2 single crystals verified using focused-ion-beam-deposited nanocontacts. Inorganic Chemistry, Vol.49 (No.23). pp. 10977-10983. ISSN 0020-1669

Marmier, Arnaud, Lethbridge, Zoe A. D., Walton, Richard I., Smith, C. W. (Christopher W.), Parker, Stephen C. and Evans, K. E. (Kenneth E.). (2010) ElAM : a computer program for the analysis and representation of anisotropic elastic properties. Computer Physics Communications, Vol.181 (No.2). pp. 2102-2115. ISSN 0010-4655

Sardar, Kripasindhu, Playford, Helen Y., Darton, Richard J., Barney, Emma R., Hannon, Alex C., Tompsett, David, Fisher, J. (Janet), Kashtiban, Reza J., Sloan, Jeremy, Ramos, S. (Silvia), Cibin, Giannantonio and Walton, Richard I.. (2010) Nanocrystalline cerium-bismuth oxides : synthesis, structural characterization, and redox properties. Chemistry of Materials, Vol.22 (No.22). pp. 6191-6201. ISSN 0897-4756

Lethbridge, Zoe A. D., Walton, Richard I., Marmier, Arnaud, Smith, C. W. (Christopher W.) and Evans, K. E. (Kenneth E.). (2010) Elastic anisotropy and extreme Poisson's ratios in single crystals. Acta Materialia, Vol.58 (No.19). pp. 6444-6451. ISSN 1359-6454

Goulding, Helen V., Hulse, Sarah E., Clegg, William, 1949-, Harrington, Ross W., Playford, Helen Y., Walton, Richard I. and Fogg, Andrew M.. (2010) Yb3O(OH)(6)Cl center dot 2H(2)O : an anion-exchangeable hydroxide with a cationic inorganic framework structure. Journal of the American Chemical Society, Vol.132 (No.39). pp. 13618-13620. ISSN 0002-7863

Darton, Richard J., Turner, S. S. (Scott S.), Sloan, Jeremy, Lees, Martin R. and Walton, Richard I.. (2010) Hydrothermal synthesis of a B-Site magnetic ruthenate pyrochlore. Crystal Growth & Design, Vol.10 (No.8). pp. 3819-3823. ISSN 1528-7483

Millange, Franck, Guillou, Nathalie, Medina, Manuela E., Ferey, Gerard, Carlin-Sinclair, Abel, Golden, Kathryn M. and Walton, Richard I.. (2010) Selective sorption of organic molecules by the flexible porous hybrid metal-organic framework MIL-53(Fe) controlled by various host-guest interactions. Chemistry of Materials, Vol.22 (No.14). pp. 4237-4245. ISSN 0897-4756

Amri, Mahrez, Clarkson, Guy J. and Walton, Richard I.. (2010) Anisotropic thermal expansion of SiO2 and AlPO4 clathrasils with the AST-type structure. Journal of Physical Chemistry C, Vol.114 (No.14). pp. 6726-6733. ISSN 1932-7447

Lethbridge, Zoe A. D., Keeble, Dean Samuel, Walker, David, 1978-, Thomas, P. A. and Walton, Richard I.. (2010) An investigation of the properties of large crystals of the zeolites dodecasil-3C and ferrierite by high-temperature birefringence microscopy and X-ray diffraction. Journal of Applied Crystallography, Vol.43 (No.1). pp. 168-175. ISSN 0021-8898

Becker, Jan M., Barker, J. (James), Clarkson, Guy J., van Gorkum, Remy, Johal, Gursharon K., Walton, Richard I. and Scott, Peter, 1965 Dec. 10-. (2010) Chirality and diastereoselection in the mu-oxo diiron complexes L2Fe-O-FeL2 (L = bidentate salicylaldiminato). Dalton Transactions, Vol.39 (No.9). pp. 2309-2326. ISSN 1477-9226

Modeshia, Deena R., Walton, Richard I., Mitchell, Martin R. and Ashbrook, Sharon E.. (2010) Disordered lithium niobate rock-salt materials prepared by hydrothermal synthesis. Dalton Transactions, Vol.39 (No.26). pp. 6031-6036. ISSN 1477-9226

Guillou, Nathalie, Walton, Richard I. and Millange, Franck. (2010) MIL-53(Fe) : a good example to illustrate the power of powder diffraction in the field of MOFs. Zeitschrift für Kristallographie, Vol.225 (No.12). pp. 552-556. ISSN 0044-2968

Modeshia, Deena R. and Walton, Richard I. (2010) Solvothermal synthesis of perovskites and pyrochlores : crystallisation of functional oxides under mild conditions. Chemical Society Reviews, Vol.39 (No.11). pp. 4303-4325. ISSN 0306-0012

Millange, Franck, Medina, Manuela I., Guillou, Nathalie, Ferey, Gerard, Golden, Kathryn M. and Walton, Richard I.. (2010) Time-resolved in situ diffraction study of the solvothermal crystallization of some prototypical metal-organic frameworks. Angewandte Chemie (International Edition), Vol.49 (No.4). pp. 763-766. ISSN 1433-7851

de Combarieu, Guillaume, Hamelet, Stephane, Millange, Franck, Morcrette, Mathieu, Tarascon, Jean-Marie, Ferey, Gerard and Walton, Richard I.. (2009) In situ Fe XAFS of reversible lithium insertion in a flexible metal organic framework material. Electrochemistry Communications, Vol.11 (No.10). pp. 1881-1884. ISSN 1388-2481

Amri, Mahrez and Walton, Richard I.. (2009) Negative thermal expansion in the aluminum and gallium phosphate zeotypes with CHA and AEI structure types. Chemistry of Materials, Vol.21 (No.14). pp. 3380-3390. ISSN 0897-4756

Ashbrook, Sharon E., Cutajar, Marica, Griffin, J. M. (John M.), Lethbridge, Zoe A. D., Walton, Richard I. and Wimperis, Stephen. (2009) Transformation of AlPO-53 to JDF-2 : reversible dehydration of a templated aluminophosphate studied by MAS NMR and diffraction. Journal of Physical Chemistry C, Vol.113 (No.24). pp. 10780-10789. ISSN 1932-7447

Lethbridge, Zoe A. D., Walton, Richard I., Bosak, Alexei and Krisch, Michael. (2009) Single-crystal elastic constants of the zeolite analcime measured by inelastic X-ray scattering. Chemical Physics Letters, Vol.471 (No.4-6). pp. 286-289. ISSN 0009-2614

Williams, Jennifer J., Lethbridge, Zoe A. D., Clarkson, Guy J., Ashbrook, Sharon E., Evans, K. E. (Kenneth E.) and Walton, Richard I.. (2009) The bulk material dissolution method with small amines for the synthesis of large crystals of the siliceous zeolites ZSM-22 and ZSM-48. Microporous and Mesoporous Materials, Vol.119 (No.1-3). pp. 259-266. ISSN 1387-1811

Qin, Y. B., Yang, H. X., Zhang, Y., Tian, H. F., Ma, C., Zhao, Y. G., Walton, Richard I. and Li, J. Q.. (2009) The effect of Mg doping on the structural and physical properties of LuFe2O4 and Lu2Fe3O7. Journal of Physics: Condensed Matter, Vol.21 (No.1). article no. 5401. ISSN 0953-8984

Modeshia, Deena R., Darton, Richard J., Ashbrook, Sharon E. and Walton, Richard I.. (2009) Control of polymorphism in NaNbO3 by hydrothermal synthesis. Chemical Communications, Vol.45 (No.1). pp. 68-70. ISSN 1359-7345

Lethbridge, Zoe A. D., Clarkson, Guy J., Turner, S. S. (Scott S.) and Walton, Richard I.. (2009) Polymorphism and variable structural dimensionality in the iron(III) phosphate oxalate system : a new polymorph of 3D [Fe-2(HPO4)(2)(C2O4)(H2O)(2)]center dot 2H(2)O and the layered material [Fe-2(HPO4)(2)(C2O4)(H2O)(2)]. Dalton Transactions (No.42). pp. 9176-9182. ISSN 1477-9226

Fisher, Robin D. and Walton, Richard I.. (2009) Time and position resolved in situ X-ray diffraction study of the hydrothermal conversion of gypsum monoliths to hydroxyapatite. Dalton Transactions (No.38). pp. 8079-8086. ISSN 1477-9226

Sanchez-Valle, Carmen, Lethbridge, Zoe A. D., Sinogeikin, Stanislav V., Williams, Jennifer J., Walton, Richard I., Evans, K. E. (Kenneth E.) and Bass, Jay D.. (2008) Negative Poisson's ratios in siliceous zeolite MFI-silicalite. Journal of Chemical Physics, Vol.128 (No.18). ISSN 0021-9606

Spooren, J. and Walton, Richard I. (2008) Doped manganites. In: Schubert, U. (Ulrich) and Háeusing, Nicola and Laine , Richard M., 1947-, (eds.) Materials syntheses : a practical guide. Wien ; New York: Springer, pp. 95-102. ISBN 9783211751251

Millange, Franck, Guillou, Nathalie, Walton, Richard I., Greneche, Jean-Marc, Margiolaki, Irene and Fereya, Gerard. (2008) Effect of the nature of the metal on the breathing steps in MOFs with dynamic frameworks. Chemical Communications (No.39). pp. 4732-4734. ISSN 1359-7345

Millange, Franck, Serre, Christian, Guillou, Nathalie, Ferey, Gerard and Walton, Richard I.. (2008) Structural effects of solvents on the breathing of metal-organic frameworks : an in situ diffraction study. Angewandte Chemie (International Edition), Vol.47 (No.22). pp. 4100-4105. ISSN 1433-7851

Ashbrook, Sharon E., Cutajar, Marica, Pickard, Chris J., Walton, Richard I. and Wimperis, Stephen. (2008) Structure and NMR assignment in calcined and as-synthesized forms of AlPO-14 : a combined study by first-principles calculations and high- resolution Al-27-P-31 MAS NMR correlation. Physical Chemistry Chemical Physics, Vol.10 (No.37). pp. 5754-5764. ISSN 1463-9076

Wright, Christopher S., Walton, Richard I., Thompsett, David, Fisher, Janet and Ashbrook, Sharon E.. (2007) One-step hydrothermal synthesis of nanocrystalline ceria-zirconia mixed oxides: The beneficial effect of sodium inclusion on redox properties. Advanced Materials, Vol.19 (No.24). pp. 4500-4504. ISSN 0935-9648

Williams, Jennifer J., Smith, Christopher W., Evans, Kenneth E., Lethbridge, Zoe A. D. and Walton, Richard I.. (2007) An analytical model for producing negative poisson's ratios and its application in explaining off axis elastic properties of the NAT-type zeolites. Acta Materialia, Vol.55 (No.17). pp. 5697-5707. ISSN 1359-6454

Modeshia, Deena R., Wright, Christopher S., Payne, Julia L., Sankar, Gopinathan, Fiddy, Steven G. and Walton, Richard I.. (2007) Low-temperature redox properties of nanocrystalline cerium(IV) oxides revealed by in situ XANES. Journal of Physical Chemistry C, Vol.111 (No.38). pp. 14035-14039. ISSN 1932-7447

Kolesnikov, A. I., Yang, H. X., Shi, Y. G., Li, J. Q., Walton, R. I. and Li, J. C.. (2007) Observation of two O-H covalent bonds of water in the Na0.3CoO2∙1.3H2O superconductor by inelastic neutron spectroscopy. Physical Review B, Vol.76 (No.9). Article: 092302. ISSN 1098-0121

Williams, Jennifer J., Smith, Christopher W., Evans, Kenneth E., Lethbridge, Zoe A. D. and Walton, Richard I.. (2007) Off-axis elastic properties and the effect of extraframework species on structural flexibility of the NAT-type zeolites: simulations of structure and elastic properties. Chemistry of Materials, Vol.19 (No.10). pp. 2423-2434. ISSN 0897-4756

Grima, Joseph N., Gatt, Ruben, Zammit, Victor, Williams, Jennifer J., Evans, Kenneth E., Alderson, Andrew and Walton, Richard I. (2007) Natrolite: a zeolite with negative Poisson's ratios. In: 28th International Conference on the Physics of Semiconductors, Vienna, Austria, 2006. Published in: Journal of Applied Physics, Vol.101 (No.8). Article: 086102.