Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Ka H. Hong"'
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Electronic phase separation is an important feature of many correlated perovskite compounds but hasn’t been seen in other complex oxides with similar physical behaviour such as magnetite. Hong et al. find phase separation between a magnetite-like c
Externí odkaz:
https://doaj.org/article/65f4cb6a21104128bfe704e6489fef2a
Autor:
Midori Amano Patino, Fabio Denis Romero, Masato Goto, Takashi Saito, Fabio Orlandi, Pascal Manuel, Attila Szabó, Paula Kayser, Ka H. Hong, Khalid N. Alharbi, J. Paul Attfield, Yuichi Shimakawa
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p 043208 (2021)
Orthogonal spin ordering is rarely observed in magnetic oxides because nearest-neighbor symmetric Heisenberg superexchange interactions usually dominate. We have discovered that in the quadruple perovskite CaFe_{3}Ti_{4}O_{12}, where only the S=2 Fe^
Externí odkaz:
https://doaj.org/article/aa5a43526b0c483ba68c39c06c8c4c47
Publikováno v:
Hong, K H, Solana-Madruga, E, Coduri, M, Ritter, C & Attfield, J P 2022, ' Synthesis, Structure and Magnetic Properties of NiFe 3 O 5 ', ECS Journal of Solid State Science and Technology, vol. 11, no. 1, 013009 . https://doi.org/10.1149/2162-8777/ac4a81
A new CaFe3O5-type phase NiFe3O5 (orthorhombic Cmcm symmetry, cell parameters a = 2.89126(7), b = 9.71988(21) and c = 12.52694(27) Å) has been synthesised under pressures of 12–13 GPa at 1200 °C. NiFe3O5 has an inverse cation site distribution an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f28c55636920b61078d5be9ed8439b1
https://www.pure.ed.ac.uk/ws/files/259800294/20220401_Attfield_NiFe3O5_JSST_AAM.pdf
https://www.pure.ed.ac.uk/ws/files/259800294/20220401_Attfield_NiFe3O5_JSST_AAM.pdf
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-1 (2018)
The original version of this Article contained an error in the third sentence of the legend of Fig. 2, which incorrectly read ‘The phase fractions of the charge ordered (CO) phase, obtained from synchrotron (X) and neutron (N) diffraction data are
Externí odkaz:
https://doaj.org/article/4b1291c3943c4dabba402919bcfdf1d4
Autor:
Alannah Hallas, Stuart Calder, Matthew B. Stone, Christopher R. Wiebe, Paul Sarte, B. A. Gonzalez, Stephen D. Wilson, Adam A. Aczel, M. Zelensky, Edward J. Pace, Yixi Su, Manh Duc Le, S. J. Gomez, Chris Stock, J. P. Attfield, Ka H. Hong, Erxi Feng
Publikováno v:
Physical Review B. 103
Nd-based pyrochlore oxides have garnered significant interest owing to the moment-fragmentation physics observed in Nd${}_{2}$Zr${}_{2}$O${}_{7}$ and speculated in Nd${}_{2}$Hf${}_{2}$O${}_{7}$. Notably, this phenomenon is absent in Nd${}_{2}$Sn${}_{
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01c1da5e626aa179914a02ae7c697774
https://doi.org/10.1103/physrevb.103.214419
https://doi.org/10.1103/physrevb.103.214419
Autor:
Haidong Zhou, Mitchell M. Bordelon, Minseong Lee, J. P. Attfield, Alannah Hallas, C. R. Wiebe, J. A. M. Paddison, Chris Stock, Matthew B. Stone, P. M. Sarte, Dalmau Reig-i-Plessis, L. Mangin-Thro, Ka H. Hong, K. Cruz-Kan, Daniel M. Pajerowski, Stuart Calder, Yiming Qiu, Stephen D. Wilson, Eun Sang Choi, Adam A. Aczel, Brenden R. Ortiz
Publikováno v:
Sarte, P M, Cruz-Kan, K, Ortiz, B R, Hong, K H, Bordelon, M M, Reig-i-Plessis, D, Lee, M, Choi, E S, Stone, M B, Calder, S, Pajerowski, D M, Mangin-Thro, L, Qiu, Y, Attfield, J P, Wilson, S D, Stock, C, Zhou, H D, Hallas, A M, Paddison, J A M, Aczel, A A & Wiebe, C R 2021, ' Dynamical ground state in the XY pyrochlore Yb 2 GaSbO 7 ', npj Quantum Materials, vol. 6, no. 1, 42 . https://doi.org/10.1038/s41535-021-00343-4
'npj Quantum Materials ', vol: 6, pages: 42-1-42-9 (2021)
npj Quantum Materials, Vol 6, Iss 1, Pp 1-9 (2021)
'npj Quantum Materials ', vol: 6, pages: 42-1-42-9 (2021)
npj Quantum Materials, Vol 6, Iss 1, Pp 1-9 (2021)
The magnetic ground state of the pyrochlore Yb2GaSbO7 has not been established. The persistent spin fluctuations observed by muon spin-relaxation measurements at low temperatures have not been adequately explained for this material using existing the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fab894bed927d4b8d93e0e60878fff78
https://www.pure.ed.ac.uk/ws/files/210368052/20210520_Attfield_s41535_021_00343_4.pdf
https://www.pure.ed.ac.uk/ws/files/210368052/20210520_Attfield_s41535_021_00343_4.pdf
Autor:
Pascal Manuel, Elena Solana-Madruga, Ka H. Hong, Yuichi Shimakawa, J. Paul Attfield, Branislav Viliam Hakala, Midori Amano Patino
Publikováno v:
Physical Review Materials. 5
Electronic phase separation into charge-ordered (CO) and charge-averaged (CA) phases in $\mathrm{Ca}{\mathrm{Fe}}_{3\ensuremath{-}x}{M}_{x}{\mathrm{O}}_{5}$ samples for dopants $M=\mathrm{Mn}$ and Co has been investigated using powder neutron and x-r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccd7fef353b14d4e93a81059fea09701
https://doi.org/10.1103/physrevmaterials.5.024406
https://doi.org/10.1103/physrevmaterials.5.024406
Publikováno v:
Hong, K H, Solana-madruga, E, Coduri, M & Attfield, J P 2018, ' Complex Cation and Spin Orders in the High-Pressure Ferrite CoFe3O5 ', Inorganic Chemistry . https://doi.org/10.1021/acs.inorgchem.8b02458
A ferrite in the Sr2Tl2O5-type MFe3O5 family with M = Co has been synthesized at 12 GPa pressure. Neutron diffraction shows the sample to be Co deficient with composition Co0.6Fe3.4O5. The Co/Fe cation distribution is found to be profoundly different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09c977fa25dfec96a6cb35386466a9c0
https://doi.org/10.1021/acs.inorgchem.8b02458
https://doi.org/10.1021/acs.inorgchem.8b02458
Autor:
Sanghamitra Mukhopadhyay, S. C. Capelli, J. P. Attfield, Duc Le, William Ratcliff, Chris Stock, Graham McNally, P. M. Sarte, M. Songvilay, Elise Pachoud, Tatiana Guidi, V. Garcia-Sakai, Ka H. Hong, A. A. Arévalo-López
Publikováno v:
Physical Review B. 98
The antiferromagnetic mixed valence ternary oxide α-CoV3O8 displays disorder on the Co 2+ site that is inherent to the Ibam space group resulting in a local selection rule requiring one Co 2+ and one V 4+ reside next to each other, thus giving rise
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e6ec48b420db770f056ceed320c2791
https://doi.org/10.1103/physrevb.98.224410
https://doi.org/10.1103/physrevb.98.224410
Publikováno v:
Zeitschrift für anorganische und allgemeine Chemie. 642:1355-1358
MnFe3O5 was synthesized under a pressure of 10 GPa at 1400 °C. MnFe3O5 has an orthorhombic structure (space group Cmcm, a = 2.9137(1), b = 9.8565(7) and c = 12.6143(6) A at 300 K) and is isostructural with Fe4O5. Magnetic measurements reveal an anti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f9fa34f8aa1a0c6d5e48f4d5753a223
https://doi.org/10.1002/zaac.201600365
https://doi.org/10.1002/zaac.201600365