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Low temperature measurements of the ac magnetic susceptibility along the [110] direction of a single crystal of the dipolar spin ice material Ho2Ti2O7, in zero static field, are presented. While behavior that is qualitatively consistent…

Materials Science · Physics 2015-05-27 J. A. Quilliam , L. R. Yaraskavitch , H. A. Dabkowska , B. D. Gaulin , J. B. Kycia

Complex magneto structural behaviour of rare rich intermetallic Tb$_3$Co is reported in this study. Below the 84K (T$_N$), it undergoes a first order magnetic transition 72K confirmed from specific heat and magnetization measurements.…

Materials Science · Physics 2019-08-23 Srikanta Goswami , P. D. Babu , R. Rawat

The transition metal based oxide YBaCo3FeO7 is structurally related to the mineral Swedenborgite SbNaBe4O7, a polar non-centrosymmetric crystal system. The magnetic Co3Fe sublattice consists of a tetrahedral network containing kagome-like…

Materials Science · Physics 2015-05-28 Martin Valldor , Raphaël P. Hermann , Joachim Wuttke , Michaela Zamponi , Werner Schweika

The lanthanide orthoborates, $Ln$BO$_3$, $Ln$ = Gd, Tb, Dy, Ho, Er, Yb crystallise in a monoclinic structure with the magnetic $Ln^{3+}$ forming an edge-sharing triangular lattice. The triangles are scalene, however all deviations from the…

Materials Science · Physics 2017-10-20 P Mukherjee , Y Wu , G I Lampronti , S E Dutton

The magnetic susceptibility, crystal and magnetic structures, and electronic structure of double perovskite Sr2ScOsO6 are reported. Using both neutron and x-ray powder diffraction we find that the crystal structure is monoclinic P21/n from…

Strongly Correlated Electrons · Physics 2015-04-06 A. E. Taylor , R. Morrow , D. J. Singh , S. Calder , M. D. Lumsden , P. M. Woodward , A. D. Christianson

We have studied the field-induced magnetic structures of Tb2Ti2O7 pyrochlore by single-crystal neutron diffraction under a field applied along the [111] local anisotropy axis, up to H=12T and down to T=40mK. We collected a hundred magnetic…

Strongly Correlated Electrons · Physics 2013-07-03 A. P. Sazonov , A. Gukasov , H. B. Cao , P. Bonville , E. Ressouche , C. Decorse , I. Mirebeau

The spiral magnetic structure and underlying spin lattice of BiMnFe2O6 are investigated by low-temperature neutron powder diffraction and density functional theory band structure calculations. In spite of the random distribution of the Mn3+…

We report a structural and thermodynamic study of the "stuffed spin ice" material Ho2TiO5 (i.e., Ho2(Ti1.33Ho0.67)O6.67), comparing samples synthesized through two different routes. Neutron powder diffraction and electron diffraction reveal…

Materials Science · Physics 2009-11-13 G. C. Lau , B. G. Ueland , M. L. Dahlberg , R. S. Freitas , Q. Huang , H. W. Zandbergen , P. Schiffer , R. J. Cava

Double perovskite-based magnets wherein frustration and competition between emergent degrees of freedom are at play can lead to novel electronic and magnetic phenomena. Herein, we report the electronic structure and magnetic properties of…

Pyrochlore iridates A2Ir2O7 (A = rare earth elements, Y or Bi) hold great promise for realizing novel electronic and magnetic states owing to the interplay of spin-orbit coupling, electron correlation and geometrical frustration. A…

Strongly Correlated Electrons · Physics 2017-10-04 W. C. Yang , W. K. Zhu , H. D. Zhou , L. Ling , E. S. Choi , M. Lee , Y. Losovyj , Chi-Ken Lu , S. X. Zhang

We report on the spin structure of the pyrochlore iridate Nd$_2$Ir$_2$O$_7$ that could be directly determined by means of powder neutron diffraction. Our magnetic structure refinement unravels a so-called all-in/all-out magnetic structure…

Strongly Correlated Electrons · Physics 2016-10-14 H. Guo , C. Ritter , A. C. Komarek

We have investigated the temperature evolution of the magnetic structures of HoFeO$_3$ by single crystal neutron diffraction. The three different magnetic structures found as a function of temperature for \hfo\ are described by the magnetic…

Materials Science · Physics 2016-04-29 T. Chatterji , M. Meven , P. J. Brown

We have grown RFe2Ge2 single crystals for R = Y and ten members of the lanthanide series (Pr, Nd, Sm, Gd-Tm, Lu) using Sn flux as the solvent. The method yields clean, high quality crystal plates as evidenced by residual resistivities and…

Strongly Correlated Electrons · Physics 2009-11-10 M. A. Avila , S. L. Bud'ko , P. C. Canfield

We investigated the crystal and magnetic structures of the spin-1/2 frustrated antiferromagnet Cu3Mo2O9 in which the spin system consists of antiferromagnetic chains and dimers. The space group at room temperature has been reported to be…

The rare earth pyrochlore magnet Yb2Ti2O7 is among a handful of materials that apparently exhibit no long range order down to the lowest explored temperatures and well below the Curie-Weiss temperature. Paramagnetic neutron scattering on a…

Statistical Mechanics · Physics 2011-04-11 J. D. Thompson , P. A. McClarty , M. J. P. Gingras

We used single-crystal x-ray and neutron diffraction to investigate the crystal and magnetic structures of trigonal lattice iridate Ca2Sr2IrO6. The crystal structure is determined to be $R\bar3$ with two distinct Ir sites. The system…

Strongly Correlated Electrons · Physics 2018-06-14 Jieming Sheng , Feng Ye , Christina Hoffmann , Valentino R. Cooper , Satoshi Okamoto , Jasminka Terzic , Hao Zheng , Hengdi Zhao , G. Cao

Hexagonal HoMnO$_{3}$ is a frustrated antiferromagnet (T$_{N}$=72 K) ferroelectric (T$_{C}$=875 K) in which these two order parameters are coupled. Our neutron measurements of the spin wave dispersion for the S=2 Mn$^{3+}$ on the layered…

Strongly Correlated Electrons · Physics 2009-11-11 O. P. Vajk , M. Kenzelmann , J. W. Lynn , S. B. Kim , S. -W. Cheong

A2Ir2O7 iridates were proven to crystallise in the geometrically frustrated pyrochlore structure, which remains stable upon rare-earth cation substitution, temperature variation, and external pressure application. However, the change of…

Strongly Correlated Electrons · Physics 2024-08-05 Daniel Staško , Petr Proschek , Jiří Prchal , Milan Klicpera

We report low-temperature powder X-ray and neutron diffraction studies on breathing pyrochlore magnets Cu$M$Cr$_{4}$S$_{8}$ ($M$ = Al, Ga), which undergo a magnetic transition at $T_{\rm N} \approx$ 21 and 31 K for {$M$ = Al and Ga,…

Materials Science · Physics 2024-05-09 Masaki Gen , Taro Nakajima , Hiraku Saito , Yusuke Tokunaga , Taka-hisa Arima

Elastic and inelastic neutron scattering studies have been carried out on the pyrochlore magnet Ho2Ti2O7. Measurements in zero applied magnetic field show that the disordered spin ice ground state of Ho2Ti2O7 is characterized by a pattern…

Strongly Correlated Electrons · Physics 2016-08-05 J. P. Clancy , J. P. C. Ruff , S. R. Dunsiger , Y. Zhao , H. A. Dabkowska , J. S. Gardner , Y. Qiu , J. R. D. Copley , T. Jenkins , B. D. Gaulin