Journal articles on the topic 'Na4Ir3O8'

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1

Talanov, V. M., V. B. Shirokov, and M. V. Talanov. "Unique atom hyper-kagome order in Na4Ir3O8and in low-symmetry spinel modifications." Acta Crystallographica Section A Foundations and Advances 71, no. 3 (April 25, 2015): 301–18. http://dx.doi.org/10.1107/s2053273315003848.

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Group-theoretical and thermodynamic methods of the Landau theory of phase transitions are used to investigate the hyper-kagome atomic order in structures of ordered spinels and a spinel-like Na4Ir3O8crystal. The formation of an atom hyper-kagome sublattice in Na4Ir3O8is described theoretically on the basis of the archetype (hypothetical parent structure/phase) concept. The archetype structure of Na4Ir3O8has a spinel-like structure (space group Fd\bar 3m) and composition [Na1/2Ir3/2]16d[Na3/2]16cO32e4. The critical order parameter which induces hypothetical phase transition has been stated. It is shown that the derived structure of Na4Ir3O8is formed as a result of the displacements of Na, Ir and O atoms, and ordering of Na, Ir and O atoms, orderingdxy,dxz,dyzorbitals as well. Ordering of all atoms takes place according to the type 1:3. Ir and Na atoms form an intriguing atom order: a network of corner-shared Ir triangles called a hyper-kagome lattice. The Ir atoms form nanoclusters which are named decagons. The existence of hyper-kagome lattices in six types of ordered spinel structures is predicted theoretically. The structure mechanisms of the formation of the predicted hyper-kagome atom order in some ordered spinel phases are established. For a number of cases typical diagrams of possible crystal phase states are built in the framework of the Landau theory of phase transitions. Thermodynamical conditions of hyper-kagome order formation are discussed by means of these diagrams. The proposed theory is in accordance with experimental data.
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2

Kanungo, Sudipta, Binghai Yan, Patrick Merz, Claudia Felser, and Martin Jansen. "Na4IrO4: Square-Planar Coordination of a Transition Metal in d5Configuration due to Weak On-Site Coulomb Interactions." Angewandte Chemie International Edition 54, no. 18 (March 13, 2015): 5417–20. http://dx.doi.org/10.1002/anie.201411959.

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3

Kanungo, Sudipta, Binghai Yan, Patrick Merz, Claudia Felser, and Martin Jansen. "Na4IrO4: Square-Planar Coordination of a Transition Metal in d5Configuration due to Weak On-Site Coulomb Interactions." Angewandte Chemie 127, no. 18 (March 13, 2015): 5507–10. http://dx.doi.org/10.1002/ange.201411959.

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4

Mader, K., and R. Hoppe. "Zu Oxoiridaten mit quadratisch-planaren [IrO4]4?-Gruppen: Na4IrO4, eine MgO-Ersetzungsvariante mit geordneten L�cken im Anionenteilgitter." Zeitschrift f�r anorganische und allgemeine Chemie 619, no. 10 (October 1993): 1647–54. http://dx.doi.org/10.1002/zaac.19936191002.

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5

Kanungo, Sudipta, Binghai Yan, Patrick Merz, Claudia Felser, and Martin Jansen. "ChemInform Abstract: Na4IrO4: Square-Planar Coordination of a Transition Metal in d5Configuration Due to Weak On-Site Coulomb Interactions." ChemInform 46, no. 28 (June 25, 2015): no. http://dx.doi.org/10.1002/chin.201528004.

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6

MADER, K., and R. HOPPE. "ChemInform Abstract: Oxoiridates(IV) with Square-Planar Groups (IrO4)4-: Na4IrO4, a Substitution-Variant of MgO with Ordered Vacancies in the Anionic Part of Structure." ChemInform 25, no. 1 (August 19, 2010): no. http://dx.doi.org/10.1002/chin.199401040.

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7

Talanov, M. V., V. B. Shirokov, and V. M. Talanov. "Atomic order and metallic nanoclusters in Na4Ir3O8." Nanosystems: Physics, Chemistry, Mathematics, June 20, 2015, 442–50. http://dx.doi.org/10.17586/2220-8054-2015-6-3-442-450.

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8

Singh, Yogesh, Y. Tokiwa, J. Dong, and P. Gegenwart. "Spin liquid close to a quantum critical point in Na4Ir3O8." Physical Review B 88, no. 22 (December 30, 2013). http://dx.doi.org/10.1103/physrevb.88.220413.

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9

Gupta, Satyendra Nath, P. V. Sriluckshmy, Ashiwini Balodhi, D. V. S. Muthu, S. R. Hassan, Yogesh Singh, T. V. Ramakrishnan, and A. K. Sood. "Spin liquid like Raman signatures in the hyperkagome iridate Na4Ir3O8." Physical Review B 94, no. 15 (October 28, 2016). http://dx.doi.org/10.1103/physrevb.94.155153.

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10

Podolsky, Daniel, and Yong Baek Kim. "Spin-orbit coupling in the metallic and spin-liquid phases of Na4Ir3O8." Physical Review B 83, no. 5 (February 2, 2011). http://dx.doi.org/10.1103/physrevb.83.054401.

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11

Zheng, Hong, Junjie Zhang, Constantinos C. Stoumpos, Yang Ren, Yu-Sheng Chen, Rebecca Dally, Stephen D. Wilson, Zahirul Islam, and J. F. Mitchell. "Controlled vapor crystal growth of Na4Ir3O8 : A three-dimensional quantum spin liquid candidate." Physical Review Materials 2, no. 4 (April 24, 2018). http://dx.doi.org/10.1103/physrevmaterials.2.043403.

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12

Chen, Gang, and Yong Baek Kim. "Anomalous enhancement of the Wilson ratio in a quantum spin liquid: The case of Na4Ir3O8." Physical Review B 87, no. 16 (April 15, 2013). http://dx.doi.org/10.1103/physrevb.87.165120.

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13

Huang, Biao, Yong Baek Kim, and Yuan-Ming Lu. "Interplay of nonsymmorphic symmetry and spin-orbit coupling in hyperkagome spin liquids: Applications to Na4Ir3O8." Physical Review B 95, no. 5 (February 1, 2017). http://dx.doi.org/10.1103/physrevb.95.054404.

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14

Singh, R. R. P., and J. Oitmaa. "High-temperature series expansion study of the Heisenberg antiferromagnet on the hyperkagome lattice: Comparison with Na4Ir3O8." Physical Review B 85, no. 10 (March 12, 2012). http://dx.doi.org/10.1103/physrevb.85.104406.

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15

Zhou, Yi, Patrick A. Lee, Tai-Kai Ng, and Fu-Chun Zhang. "Na4Ir3O8as a 3D Spin Liquid with Fermionic Spinons." Physical Review Letters 101, no. 19 (November 3, 2008). http://dx.doi.org/10.1103/physrevlett.101.197201.

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16

Ming, Xing, Carmine Autieri, Kunihiko Yamauchi, and Silvia Picozzi. "Role of square planar coordination in the magnetic properties of Na4IrO4." Physical Review B 96, no. 20 (November 30, 2017). http://dx.doi.org/10.1103/physrevb.96.205158.

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17

Wang, Di, Feng Tang, Yongping Du, and Xiangang Wan. "First-principles study of the giant magnetic anisotropy energy in bulk Na4IrO4." Physical Review B 96, no. 20 (November 30, 2017). http://dx.doi.org/10.1103/physrevb.96.205159.

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