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We present the results of an investigation of both the magnetic and structural phase transitions in a high quality single crystalline sample of the undoped, iron pnictide compound BaFe$_2$As$_2$. Both phase transitions are characterized via…

Superconductivity · Physics 2015-05-13 Stephen D. Wilson , Z. Yamani , C. R. Rotundu , B. Freelon , E. Bourret-Courchesne , R. J. Birgeneau

We report a neutron diffraction study of single-crystal CePtAl$_3$ complemented by measurements of the specific heat under applied magnetic field. Below $T_\mathrm{N}$=3 K CePtAl$_3$ develops incommensurate antiferromagnetic order with a…

Strongly Correlated Electrons · Physics 2023-02-01 M. Stekiel , P. Cermak , C. Franz , W. Simeth , S. Weber , E. Ressouche , W. Schmidt , K. Nemkovski , H. Deng , A. Bauer , C. Pfleiderer , A. Schneidewind

139La nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements have been performed to investigate the magnetic properties of the itinerant magnet La2Ni7 which shows a series of antiferromagnetic (AFM) phase…

Strongly Correlated Electrons · Physics 2023-08-11 Q. -P. Ding , J. Babu , K. Rana , Y. Lee , S. L. Bud'ko , R. A. Ribeiro , P. C. Canfield , Y. Furukawa

We address the concomitant metal-insulator transition (MIT) and antiferromagnetic ordering in the novel pyrochlore iridate Eu2Ir2O7 by combining x-ray absorption spectroscopy, x-ray and neutron diffractions and density functional theory…

Results of magnetization and neutron diffraction measurements of the manganese vanadate system Mn$_5$(VO$_4$)$_2$(OH)$_4$ are reported. The crystal structure of this compound contains triangular [Mn$_3$O$_{13}$] building blocks that produce…

Strongly Correlated Electrons · Physics 2018-09-07 V. O. Garlea , M. A. McGuire , L. D. Sanjeewa , D. M. Pajerowski , F. Ye , J. W. Kolis

We present measurements of the specific heat, magnetization, magnetocaloric effect and magnetic neutron diffraction carried out on single crystals of antiferromagnetic Yb$_{3}$Pt$_{4}$, where highly localized Yb moments order at $T_{\rm…

Strongly Correlated Electrons · Physics 2015-05-28 L. S. Wu , Y. Janssen , C. Marques , M. C. Bennett , M. S. Kim , K. Park , Songxue Chi , J. W. Lynn , G. Lorusso , G. Biasiol , M. C. Aronson

We present neutron diffraction, muon spin rotation and pulsed-field magnetometry measurements on the Heisenberg quantum chiral chain [Cu(pym)(H2O)4]SiF6.H2O, which displays a four-fold-periodic rotation of the local environment around the…

The high-pressure synthesized quasi-one-dimensional compounds NaMn$_2$O$_4$ and Li$_{0.92}$Mn$_2$O$_4$ are both antiferromagnetic insulators, and here their atomic and magnetic structures were investigated using neutron powder diffraction.…

We report the magnetic properties of Mg$_{0.2}$Co$_{0.2}$Ni$_{0.2}$Cu$_{0.2}$Zn$_{0.2}$O, a high-entropy oxide with rocksalt structure, and the influence of substitutions on these properties. From the magnetic susceptibility and neutron…

Polarized neutron diffraction allows to determine the local susceptibility tensor on the magnetic site both in single crystals and powders. It is widely used in the studies of single crystals, but it is still hardly applicable to a number…

Materials Science · Physics 2019-11-20 Iurii Kibalin , Arsen Gukasov

The development of short- and long-range magnetic order induced in a frustrated zig-zag ladder compound SrDy2O4 by an applied field is studied using neutron diffraction techniques. In zero field, SrDy2O4 lacks long-range magnetic order down…

Strongly Correlated Electrons · Physics 2017-04-25 O. A. Petrenko , O. Young , D. Brunt , G. Balakrishnan , P. Manuel , D. D. Khalyavin , C. Ritter

Neutron diffraction measurements on multiferroic LuFe2O4 show changes in the antiferromagnetic (AFM) structure characterized by wavevector q = (1/3 1/3 1/2) as a function of electric field cooling procedures. The increase of intensity from…

Strongly Correlated Electrons · Physics 2011-11-09 A. M. Mulders , M. Bartkowiak , J. R. Hester , E. Pomjakushina , K. Conder

Neutron and synchrotron resonant X-ray magnetic scattering (RXMS) complemented by heat capacity and resistivity measurements reveal the evolution of the magnetic structures of Fe and Ce sublattices in single crystal CeFeAsO. The RXMS of…

The magnetic behavior of the compound, Gd3Ru4Al12, which has been reported to crystallize in a hexagonal structure about two decades ago, had not been investigated in the past literature despite interesting structural features (that is,…

Strongly Correlated Electrons · Physics 2016-06-22 Venkatesh Chandragiri , Kartik K Iyer , E. V. Sampathkumaran

Substitutions at the Mn-site of the charge-ordered Pr0.5Ca0.5MnO3 manganite is an effective way to induce abrupt jumps on the magnetic field driven magnetization curve. In order to get new insights into the origin of this remarkable…

We report a quasi-one-dimensional S = 1 spin chain compound BaNiTe2O7. This magnetic system has been investigated by magnetic susceptibility, specific heat, and neutron powder diffraction. These results indicate that BaNiTe2O7 develops a…

We report ferroelectric ordering in Ni substituted CaBaCo4O7. Magnetization showed ferrimagnetic transition at 60 K and an additional transition is found ~ 82 K, further, enhanced antiferromagnetic interactions and decrease in saturation…

Materials Science · Physics 2017-10-18 C. Dhanasekhar , A. K Das , Ripandeep Singh , A. Das , G. Giovannetti , D. Khomskii , A. Venimadhav

We present an investigation of magnetic ordering in the two-dimensional S=1/2 quantum magnet Cu(Pz)_2(ClO_4)_2 using specific heat and zero field muon-spin relaxation (\mu^+SR). The magnetic contribution to the specific heat is consistent…

We review neutron scattering investigations of the crystal structures, magnetic structures, and spin dynamics of the iron-based RFe(As,P)O (R=La, Ce, Pr, Nd), (Ba,Sr,Ca)Fe2As2, and Fe1+x(Te-Se) systems. On cooling from room temperature all…

Superconductivity · Physics 2009-05-20 Jeffrey W. Lynn , Pengcheng Dai

CoSe$_2$O$_5$ has a crystal structure consisting of zig-zag chains of edge shared CoO$_6$ octahedra running along the c axis, with the chains separated by Se$_2$O$_5^{2-}$ units. Magnetic susceptibility measurements indicate a transition at…

Materials Science · Physics 2012-02-02 Brent C. Melot , Brian Paden , Ram Seshadri , Ambesh Dixit , Gavin Lawes , Emmanuelle Suard