Results 31 to 40 of about 17,376 (136)

Enhanced magnetocaloric effect in frustrated magnets

, 2002
The magnetothermodynamics of strongly frustrated classical Heisenberg antiferromagnets on kagome, garnet, and pyrochlore lattices is examined. The field induced adiabatic temperature change (dT/dH)_S is significantly larger for such systems compared to ...
A. Giguére, A. Kushino, A.F. Lacaze, A.P. Ramirez, A.P. Ramirez, B. Canals, C. Hagmann, C. Hagmann, J. Schulenburg, J. Villain, J.A. Barclay, J.A. Leu, J.E. Greedan, J.N. Reimers, J.T. Chalker, M. E. Zhitomirsky, M.E. Zhitomirsky, M.E. Zhitomirsky, N.P. Raju, O. Tchernyshyov, O. Tegus, O.A. Petrenko, P. Schiffer, P. Schiffer, R. Moessner, R. Moessner, S. Hov, S.-H. Lee, S.-H. Lee, V. Bondah-Jagalu, V.K. Pecharsky, W. Brenig, W.J. McRae, Y.K. Tsui, Y.K. Tsui   +34 more
core   +2 more sources

Single crystal growth, structure and magnetic properties of Pr2Hf2O7 pyrochlore [PDF]

, 2016
Large single crystals of the pyrochlore Pr2Hf2O7 have been successfully grown by the floating zone technique using an optical furnace equipped with high power Xenon arc lamps.
Balakrishnan, Geetha, Ban, Voraksmy, Hatnean, Monica Ciomaga, Kenzelmann, Michel, Lees, Martin R., Pomjakushin, Vladimir, Sibille, Romain   +6 more
core   +2 more sources

Synthesis and Structure of Oxygen Deficient Lead-Technetium Pyrochlore, the First Example of a Valence V Technetium Oxide

Frontiers in Chemistry, 2021
The structure of lead-technetium pyrochlore has been refined in space group Fd3¯m with a = 10.36584(2) Å using a combination of synchrotron X-ray and neutron powder diffraction data and confirmed via Electron Diffraction.
Brendan J. Kennedy, Timothy A. Ablott, Maxim Avdeev, Maxim Avdeev, Melody L. Carter, Linda Losurdo, Matilde Saura-Muzquiz, Kevin J. Thorogood, Jimmy Ting, Kia S. Wallwork, Zhaoming Zhang, Hanliang Zhu, Gordon J. Thorogood, Gordon J. Thorogood   +13 more
doaj   +1 more source

Theory of Multifarious Quantum Phases and Large Anomalous Hall effect in Pyrochlore Iridate Thin Films

, 2016
We theoretically investigate emergent quantum phases in the thin film geometries of the pyrochore iridates, where a number of exotic quantum ground states are proposed to occur in bulk materials as a result of the interplay between electron correlation ...
Hwang, Kyusung, Kim, Yong Baek
core   +1 more source

Solid state synthesis and catalytic performance of pyrochlore Er2Ti2O7 in epoxidation of cyclooctene [PDF]

شیمی کاربردی روز, 2020
Er2Ti2O7 pyrochlore structure was successfully prepared by solid-state method. The prepared microstructure mixed-metal oxide was characterized by XRD, SEM, EDX, FT-IR and BET.
Maryam Hasanzadeh Esfahani, mahdi Behzad
doaj   +1 more source

Partial order from disorder in a classical pyrochlore antiferromagnet [PDF]

, 2008
We investigate theoretically the phase diagram of a classical Heisenberg antiferromagnet on the pyrochlore lattice perturbed by a weak second-neighbor interaction J_2. The huge ground state degeneracy of the nearest-neighbor Heisenberg spins is lifted by
Gia-Wei Chern, O. Tchernyshyov, P. M. Chaikin, R. Moessner   +3 more
core   +2 more sources

Synthesis, structure and electrical properties of Mg-, Ni-codoped bismuth niobates

Chimica Techno Acta, 2017
Mg-, Ni-codoped bismuth niobates Bi1.6Mg0.8-xNixNb1.6O7-δ (x = 0; 0.2; 0.4; 0.6; 0.8) were obtained by conventional solid-state reaction method. It was shown that the Mg atoms are distributed at the Nb sites while the Ni atoms are distributed over the Bi-
M. S. Koroleva, I. V. Piir, E. I. Istomina   +2 more
doaj   +1 more source

Synthesis of superconducting pyrochlore RbOs2O6

, 2004
RbOs2O6, the third superconducting pyrochlore oxide (known so far), has been synthesized by encapsulation and by high pressure techniques. Suitable post chemical treatment of the as-prepared sample allowed us to eliminate the impurity phases.
B Batlogg, Brühwiler M Kazakov S M Zhigadlo N D Karpinski J Batlogg B, Hiroi Z Yonezawa S Muraoka Y, J Karpinski, M Brühwiler, N D Zhigadlo, S M Kazakov, Sakai H, Yonezawa S, Yonezawa S, Yonezawa S Muraoka Y Hiroi Z   +10 more
core   +1 more source

Upconversion luminescence of pyrochlore structured (A2B2O7) phosphors

Optical Materials: X
The pyrochlore-structured (A2B2O7) compounds have emerged as a focal point in contemporary research and materials science, captivating attention for their intriguing properties such as photoluminescence, superconductivity, ionic mobility, and potential ...
B.V. Naveen Kumar, H.C. Swart, R.E. Kroon   +2 more
doaj   +1 more source

On the age of pyrochlore carbonatites from the Ilmeno-Vishnevogorsky Alkaline Complex, the Southern Urals (insights from Rb-Sr and Sm-Nd isotopic data)

Литосфера, 2020
Research subject. In this research, we carried out Sm-Nd- и Rb-Sr-dating of pyrochlore carbonatite from the Vishnevogorsky niobium deposit, Ilmeno-Vishnevogorsky Alkaline Complex, Southern Urals.
I. L. Nedosekova, V. A. Koroteev, T. B. Bayanova, P. A. Serov, V. I. Popova, M. V. Chervyakovskaya   +5 more
doaj   +1 more source