Associate Professor Glen Stewart

+61 2 626 88770
+61 2 626 88786

LOCATION

School of Physical, Environmental and Mathematical Sciences, The University of New South Wales, Australian Defence Force Academy, PO Box 7916, Canberra BC ACT 2610, AUSTRALIA

  • ABOUT
  • PUBLICATIONS

Glen has a BSc (Honours), PhD in Physics and a Dip. Ed. from Monash University. His research involves the application of hyperfine interaction techniques (in particular 57Fe-, 169Tm- and  161Dy-Mössbauer spectroscopies) to probe electronic and magnetic interactions at the atomic level.

Recent research interests include:-

  • The nature of crystal field and magnetic interactions in rare earth compounds and intermetallics that exhibit interesting bulk behaviour
  • Magnetic properties of rare earth perovskite-related materials
  • Minerals and mineral refining processes
  • Radar absorbing materials and biomagnetic materials

Journal articles

Stewart GA; Cadogan JM; Hutchison WD; Ryan DH, 2019, 'A Mössbauer study of DyCrO4 and ErCrO4', AIP Advances, vol. 9, http://dx.doi.org/10.1063/1.5079989

Berry AJ; Stewart GA; O'Neill HSC; Mallmann G; Mosselmans JFW, 2018, 'A re-assessment of the oxidation state of iron in MORB glasses', Earth and Planetary Science Letters, vol. 483, pp. 114 - 123, http://dx.doi.org/10.1016/j.epsl.2017.11.032

Wang CH; Ainsworth CM; Champion SD; Stewart GA; Worsdale MC; Lancaster T; Blundell SJ; Brand HEA; Evans JSO, 2017, 'Crystal structure and magnetic modulation in β- C e2 O2FeS e2', Physical Review Materials, vol. 1, http://dx.doi.org/10.1103/PhysRevMaterials.1.034403

Evans JP; Stewart GA; Cadogan JM; Hutchison WD; Mitchell EE; Downes JE, 2017, 'Magnetic structure of DyN: A Dy 161 Mössbauer study', Physical Review B, vol. 95, http://dx.doi.org/10.1103/PhysRevB.95.054431

Susilo RA; Cadogan JM; Hutchison WD; Stewart GA; Avdeev M; Campbell SJ, 2017, 'Magnetic structure and spin reorientation of quaternary Dy2Fe2Si2C', Journal of Physics Condensed Matter, vol. 29, http://dx.doi.org/10.1088/1361-648X/aa52f9

Hutchison WD; Stewart GA; Cadogan JM; Princep A; Stewart R; Ryan DH, 2017, 'Magnetic ground state of Dy3+ in DyNiAl4', AIP Advances, vol. 7, http://dx.doi.org/10.1063/1.4972997

Stewart GA; Harker SJ; Hutchison WD; Amiet A; Tucker D, 2015, 'Microwave absorption and 57Fe Mossbauer properties of Ni-Ti doped barium hexaferrite', Hyperfine Interactions, vol. 230, pp. 205 - 211, http://dx.doi.org/10.1007/s10751-014-1116-6

Goossens DJ; Stewart GA; Lee WT; Studer AJ, 2015, 'Chemical and magnetic ordering in Fe0.5Ni0.5PS3', Hyperfine Interactions, vol. 231, pp. 37 - 44, http://dx.doi.org/10.1007/s10751-014-1108-6

Stewart GA; Salama HA; Voyer CJ; Ryan DH; Scott D; O Neill HSC, 2015, 'A Mössbauer investigation of orthorhombic phase YbMnO3', Hyperfine Interactions, vol. 230, pp. 195 - 203, http://dx.doi.org/10.1007/s10751-014-1092-x

Cadogan JM; Stewart GA; Munoz Perez S; Cobas R; Hansen BR; Avdeev M; Hutchison WD, 2014, 'Magnetic ordering in TmGa', Journal of Physics: Condensed Matter, vol. 26, http://dx.doi.org/10.1088/0953-8984/26/11/116002

Hudspeth JM; Stewart GA; Studer AJ; Goossens DJ, 2011, 'Crystal and magnetic structures in Perovskite-related La 1-xCaxFeO3-ä(x=0.2, 0.33)', Journal of Physics and Chemistry of Solids, vol. 72, pp. 1543 - 1547, http://dx.doi.org/10.1016/j.jpcs.2011.09.014

Harker S; Stewart GA; Okimoto H; Nishimura K; Hutchison WD, 2011, 'Magnetic properties of Nb1-xHfxFe2', Hyperfine Interactions, vol. 219, pp. 39 - 42, http://dx.doi.org/10.1007/s10751-011-0445-y

Salama HA; Stewart GA; Hutchison WD; Nishimura K; Scott D; O Neill H, 2010, 'A 169Tm-Mossbauer spectroscopy investigation of orthorhombic phase o-TmMnO3', Solid State Communications, vol. 150, pp. 289 - 291, http://dx.doi.org/10.1016/j.ssc.2009.11.002

Saensunon B; Stewart GA; Gubbens PCM; Hutchison WD; Buchsteiner A, 2010, 'Corrigendum: The crystal field interaction at the rare earth site in ErNiAl4', Journal of Physics: Condensed Matter, vol. 22, pp. 029801, http://dx.doi.org/10.1088/0953-8984/22/2/029801

Salama HA; Voyer C; Ryan DH; Stewart GA, 2009, 'Magnetic order of the rare earth sublattice in h-YbMnO3', Journal of Applied Physics, vol. 105, pp. 07E110-1 - 07E110-3, http://dx.doi.org/10.1063/1.3068011

Saensunon B; Stewart GA; Nishimura K, 2009, 'Crystal field interaction at the Tm3+ site in TmCr2Si2', Journal of Alloys and Compounds, vol. 476, pp. 49 - 53, http://dx.doi.org/10.1016/j.jallcom.2008.09.158

Salama HA; Stewart GA, 2009, 'Exchange-induced Tm magnetism in multiferroic h-TmMnO3', Journal of Physics: Condensed Matter, vol. 21, pp. 386001-1 - 386001-5, http://dx.doi.org/10.1088/0953-8984/21/38/386001

Saensunon B; Nishimura K; Voyer C; Ryan DH; Hutchison WD; Stewart GA, 2009, 'Magnetic ground state at the ytterbium site in YbNiAl4', Journal of Applied Physics, vol. 105, pp. 07E123-1 - 07E123-3, http://dx.doi.org/10.1063/1.3067526

Saensunon B; Stewart GA; Gubbens PC; Hutchison WD; Buchsteiner A, 2009, 'The crystal field interaction at the rare earth site in ErNiAl4', Journal of Physics: Condensed Matter, vol. 21, pp. 124215-1 - 124215-5, http://dx.doi.org/10.1088/0953-8984/21/12/124215

Schiemer J; Withers R; Noren L; Liu Y; Bourgeois L; Stewart GA, 2009, 'Detailed phase analysis and crystal structure investigation of a Bi1-xCaxFeO3-x/2 perovskite-related solid solution phase and selected property measurements thereof', Chemistry of materials, vol. 21, pp. 4223 - 4232, http://dx.doi.org/10.1021/cm901757h

Salama HA; Stewart GA; Ryan DH; Elouneg-Jamroz M; Edge AV, 2008, 'A Mossbauer spectroscopy investigation of h-YbMnO3', Journal of Physics: Condensed Matter, vol. 20, pp. 1 - 7, http://dx.doi.org/10.1088/0953-8984/20/25/255213

Saensunon B; Stewart GA; Pax RA, 2008, 'A combined 57Fe-Mossbauer and X-ray diffraction study of the ilmenite reduction process in a commercial rotary kiln', International Journal of Mineral Processing, vol. 86, pp. 26 - 32, http://dx.doi.org/10.1016/j.minpro.2007.10.004

Salama HA; Stewart GA; Ryan DH; Elouneg-Jamroz M; Edge AVJ, 2008, 'A Mössbauer spectroscopy investigation of h-YbMnO3', Journal of Physics Condensed Matter, vol. 20, http://dx.doi.org/10.1088/0953-8984/20/25/255213

Low HR; Phonthammachai N; Maignan A; Stewart GA; Bastow TJ; Ma LL; White TJ, 2008, 'The crystal chemistry of ferric oxyhydroxyapatite', Inorganic Chemistry, vol. 47, pp. 11774 - 11782, http://dx.doi.org/10.1021/ic801491t

Stewart GA, 2007, 'Conference report - Wagga 2007', Physicist, vol. 44, pp. 11 - 11

Harker S; Stewart GA; Gubbens PC; de Vroege CF, 2005, 'Crystal field interaction in RFe2Si2 (R = Er and Tm)', Journal of Alloys and Compounds, vol. 402, pp. 17 - 20, http://dx.doi.org/10.1016/j.jallcom.2005.04.149

Hutchison WD; Stewart GA; Harker S; Chaplin DH, 2005, 'The Nature of Line Broadening in Thermally Detected 57FeFe NMR', Hyperfine Interactions, vol. 159, pp. 121 - 125, http://dx.doi.org/10.1007/s10751-005-9089-0

Stewart GA; Hutchison WD; Edge AV; Rupprecht K; Wortmann G; Nishimura K; Isikawa Y, 2005, 'The magnetic properties of GdNiAl4', Journal of Magnetism and Magnetic Materials, vol. 292, pp. 72 - 78

Jimenez E; Gubbens PC; Sakarya S; Stewart GA; de Reotier P; Yaouanc A; Isasi J; Saez-Puche R; Zimmermann U, 2004, 'Interplay between Tm3+ and Cr5+ magnetic sublattices in TmCrO4', Journal of Magnetism and Magnetic Materials, vol. 272-76, pp. 568 - 570, http://dx.doi.org/10.1016/j.jmmm.2003.11.213

Stewart GA; Mcpherson IM; Gubbens PC; Kaiser CT; Dalmas de Reotier P; Yaouanc A; Cottrell SP, 2003, 'Search for magnetic Cu-Cu ordering in Gd2BaCuO5', Journal of Alloys and Compounds, vol. 358, pp. 7 - 11, http://dx.doi.org/10.1016/S0925-8388(03)00027-6

Cadogan JM; Ryan DH; Stewart GA; Gagnon R, 2003, '166Er Mössbauer study of Er2Ge2O 7', Journal of Magnetism and Magnetic Materials, vol. 265, pp. 199 - 203, http://dx.doi.org/10.1016/S0304-8853(03)00265-8

Hutchison WD; Chaplin DH; Ohya S; Muto S; Nishimura K; Sato H; Kawamura Y; Stewart GA, 2003, 'NMRON studies of cold rolled cobalt foils', Physica B - Condensed Matter, vol. 329-333, pp. 1083 - 1084, http://dx.doi.org/10.1016/S0921-4526(02)02343-8

Cadogan JM; Ryan DH; Stewart GA; Gagnon R, 2003, '166Er Mossbauer study of Er2Ge2O7', Journal of Magnetism and Magnetic Materials, vol. 265, pp. 199 - 203

Stewart GA; Hutchison WD; Harker SJ; Chaplin DH, 2002, 'Mössbauer absorber detection of nuclear magnetic resonance at millikelvin temperature', Physical Review B - Condensed Matter and Materials Physics, vol. 66, pp. 1 - 7, http://dx.doi.org/10.1103/PhysRevB.66.134415

Harker SJ; Van Dijk BD; Mulders AM; Gubbens PCM; Stewart GA; De Vroege CF; Buschow KHJ, 2002, 'Crystal fields and magnetic interactions in TmT2Si2 (T = Co, Ni, Cu)', Journal of Physics Condensed Matter, vol. 14, pp. 2705 - 2714, http://dx.doi.org/10.1088/0953-8984/14/10/319

Flambaum V; Stewart GA; Russell GJ; Horvat J; Dou SX, 2002, 'The Effect of Hydrogenation on the Superconducting Transition Temperature of MgB2', Physica C - Superconductivity and Its Applications, vol. 382, pp. 213 - 216, http://dx.doi.org/10.1016/S0921-4534(02)01978-0

Flambaum V; Russell GJ; Stewart GA; Horvat J; Dou SX, 2002, 'The effect of hydrogeneration on the superconducting transition temperature of MgB2', Physica C - Superconductivity and Its Applications, vol. 382, pp. 213 - 216

Stewart GA; Zukrowski J; Gubbens PC; van der Nol R; Harker S, 2001, 'Magnetic Behaviour in Tm2Fe3Si5', Journal of Magnetism and Magnetic Materials, vol. 236, pp. 93 - 98, http://dx.doi.org/10.1016/S0304-8853(01)00190-1

Stewart GA; Harker S; Strecker M; Wortmann G, 2000, 'Mössbauer spectroscopy investigation of the Immm phase nickelates Gd2BaNiO5 and Tm2BaNiO5', Physical Review - Section B - Condensed Matter, vol. 61, pp. 6220 - 6226, http://dx.doi.org/10.1103/PhysRevB.61.6220

Harker SJ; Stewart GA; Gubbens PCM, 2000, 'Magnetic order and crystal fields in the Pnma phases of Tm2BaTO5 (T = Co and Ni)', Journal of Alloys and Compounds, vol. 307, pp. 70 - 76, http://dx.doi.org/10.1016/S0925-8388(00)00840-9

Stewart GA; Gubbens PCM, 1999, 'Induced thulium magnetization in the `green phase' Tm2BaCuO5', Journal of Magnetism and Magnetic Materials, vol. 206, pp. 17 - 26, http://dx.doi.org/10.1016/S0304-8853(99)00552-1

Chaplin D; Hutchison W; Stewart G, 1998, 'Foreword - Nuclear methods in magnetism', AUSTRALIAN JOURNAL OF PHYSICS, vol. 51, pp. 153 - 155, http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000074150700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=891bb5ab6ba270e68a

Strecker M; Hettkamp P; Wortmann G; Stewart G, 1998, '155 Gd Mössbauer study of Gd 2 BaCuO 5', Journal of Magnetism and Magnetic Materials, vol. 177-181, pp. 1095 - 1096, http://dx.doi.org/10.1016/S0304-8853(97)00932-3

Stewart GA; Harker S; Pooke DM, 1998, 'Crystal-field interaction at the thulium site in TmBa2Cu4O8', Journal of Physics: Condensed Matter, vol. 10, pp. 8269 - 8278, http://dx.doi.org/10.1088/0953-8984/10/37/013

Harker SJ; Cadogan JM; Stewart GA; Campbell SJ; Kennedy SJ; Edge AVJ, 1998, 'A structural and magnetic study of Nd(Fe, Ni)8.5Si2.5', Journal of Magnetism and Magnetic Materials, vol. 183, pp. 101 - 110, http://dx.doi.org/10.1016/S0304-8853(97)01082-2

Harker S; Cadogan JM; Stewart GA; Campbell SJ; Kennedy S; Edge AV, 1998, 'A structural & magnetic study of Nd(Fe, Ni)8.5Si2.5', Journal of Magnetism and Magnetic Materials, vol. 183, pp. 101 - 110

Strecker M; Hettkamp P; Wortmann G; Stewart GA, 1998, '155Gd Mossbauer study of Gd2BaCuO5', Journal of Magnetism and Magnetic Materials, vol. 177-181, pp. 1095 - 1096

Hutchison WD; Harker SJ; St. Quintin TD; Stewart GA; Grayevsky A; Kaplan N, 1997, 'On the diffusion of Co into PrNi5', Solid State Communications, vol. 104, pp. 113 - 117, http://dx.doi.org/10.1016/S0038-1098(97)00214-7

Harker SJ; Stewart GA; Edgea AVJ, 1996, 'Induced thulium magnetisation for the Immm phase of Tm2BaNiO5', Solid State Communications, vol. 100, pp. 307 - 310, http://dx.doi.org/10.1016/0038-1098(96)00457-7

Gubbens PC; Moolenaar AA; Stewart GA; Mulder FM; Boschow KH, 1995, 'Influence of the crystal field on the magnetic behaviour of Er2 Ni17', Journal of Magnetism and Magnetic Materials, vol. 140-144, pp. 1011 - 1012, http://dx.doi.org/10.1016/0304-8853(94)00961-9