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The single-crystal growth, stoichiometry, and structure of Rb1-xFe2-ySe2-zSz crystals with substitution of Se by S are reported. The variation of the magnetic and thermodynamic parameters of samples was studied by differential-scanning…

Recently, the mixed transition metal oxides of the form Li(Ni1-y-zCoyMnz)O2, have become the center of attention as promising candidates for novel battery material. These materials have also revealed very interesting magnetic properties due…

Strongly Correlated Electrons · Physics 2013-07-30 J. Magnus Wikberg , Martin Mansson , Mohammed Dahbi , Kazuya Kamazawa , Jun Sugiyama

Structural, magnetic and magnetocaloric properties of Mn2-xCrxSb compounds have been studied. In these compounds a first order magnetic phase transition from the ferrimagnetic to the antiferromagnetic state occurs with decreasing…

Materials Science · Physics 2014-10-01 L. Caron , X. F. Miao , J. C. P Klaasse , S. Gama , E. Brück

Magnetic materials with high mobilities are intriguing subject of research from both fundamental and application perspectives. Based on first-principle calculations, we investigate the physical properties of the already synthesized AMnBi(A…

Mesoscale and Nanoscale Physics · Physics 2020-08-05 Ziming Zhu , Chunyan Liao , Si Li , Xiaoming Zhang , Weikang Wu , Zhi-Ming Yu , Rui Yu , Wei Zhang , Shengyuan A. Yang

The structural and magnetic properties of Mn$_2$FeSbO$_6$ single-crystalline mineral and ceramic samples synthesized under thermobaric treatment have been investigated, and compared to theoretical predictions based on first-principles…

Strongly Correlated Electrons · Physics 2011-05-20 R. Mathieu , S. A. Ivanov , G. V. Bazuev , M. Hudl , P. Lazor , I. V. Solovyev , P. Nordblad

We present a combined high-resolution x-ray diffraction and x-ray resonant magnetic scattering (XRMS) study of as-grown BaFe2As2. The structural/magnetic transitions must be described as a two-step process. At T_S = 134.5 K we observe the…

We have studied the crystal and magnetic structures of the magnetoelectric materials RMn2O5 (R = Tb, Ho, Dy) using neutron diffraction as a function of temperature. All three materials display incommensurate antiferromagnetic ordering below…

Strongly Correlated Electrons · Physics 2009-11-11 G. R. Blake , L. C. Chapon , P. G. Radaelli , S. Park , N. Hur , S-W. Cheong , J. Rodriguez-Carvajal

Resistivity, magnetic susceptibility, neutron scattering and x-ray crystallography measurements were used to study the evolution of magnetic order and crystallographic structure in single-crystal samples of the Ba1-xSrxFe2As2 and…

Superconductivity · Physics 2012-09-06 K. Kirshenbaum , N. P. Butch , S. R. Saha , P. Y. Zavalij , B. G. Ueland , J. W. Lynn , J. Paglione

Growth of BaMn2As2 crystals using both MnAs and Sn fluxes is reported. Room temperature crystallography, anisotropic isothermal magnetization M versus field H and magnetic susceptibility chi versus temperature T, electrical resistivity in…

Superconductivity · Physics 2010-11-12 Yogesh Singh , A. Ellern , D. C. Johnston

We investigate the physical properties of the Shastry-Sutherland lattice material BaNd$_2$ZnO$_5$. Neutron diffraction, magnetic susceptibility, and specific heat measurements reveal antiferromagnetic order below 1.65 K. The magnetic order…

Based on the relativistic spin-polarized density functional theory calculations we investigate the crystal structure, electronic and magnetic properties of a family MnPn2Ch4 compounds, where pnictogen metal atoms (Pn) are Sb and Bi;…

Materials Science · Physics 2018-09-28 S. V. Eremeev , M. M. Otrokov , E. V. Chulkov

Hexagonal Sr0.6Ba0.4MnO3 (SBMO) follows P63/mmc symmetry where MnO6 octahedra are both face-shared (Mn2O9 bi-octahedra) and corner-shared via oxygen anion. It undergoes ferroelectric (FE) and antiferromagnetic (AFM) orderings close to the…

The magnetic structures of MnBi2Te4(Bi2Te3)n can be manipulated by tuning the interlayer coupling via the number of Bi2Te3 spacer layers n, while the intralayer ferromagnetic (FM) exchange coupling is considered too robust to control. By…

The trigonal compound EuMg2Bi2 has recently been discussed in terms of its topological band properties. These are intertwined with its magnetic properties. Here detailed studies of the magnetic, thermal, and electronic transport properties…

Strongly Correlated Electrons · Physics 2020-07-01 Santanu Pakhira , M. A. Tanatar , D. C. Johnston

Crystal and magnetic structures of $R_2$Ni$_2$In ($R$ = Tb and Ho) have been studied by powder neutron diffraction at low temperatures. The compounds crystallize in an orthorhombic crystal structure of the Mn$_2$AlB$_2$-type. At low…

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

Generally, one has two strategies to achieve magnetic frustration: through geometric means or interactions with different length scales. As the former leads to much simpler theoretical treatments it is favored and so magnetic sublattices…

Strongly Correlated Electrons · Physics 2020-02-26 K. M. Taddei , L. D. Sanjeewa , J. Xing , Q. Zhang , D. Parker , A. Podleznyak , D. dela Cruz , A. S. Sefat

We report $^{75}$As nuclear magnetic resonance (NMR) / nuclear quadrupole resonance (NQR) and transmission electron microscopy (TEM) studies on LaFeAsO$_{1-x}$F$_{x}$. There are two superconducting domes in this material. The first one…

Superconductivity · Physics 2018-06-26 J. Yang , T. Oka , Z. Li , H. X. Yang , J. Q. Li , G. F. Chen , Guo-qing Zheng

We have determined the structural properties of the superconducting compound MgB2 as a function of temperature from 11 K to 297 K and as a function of hydrostatic pressure up to 0.62 GPa using neutron powder diffraction. This compound, when…

Superconductivity · Physics 2009-11-07 J. D. Jorgensen , D. G. Hinks , S. Short

The competition between interactions in frustrated magnets allows a wide variety of new ground states, often exhibiting emergent physics and unique excitations. Expanding the suite of lattices available for study enhances our chances of…

Strongly Correlated Electrons · Physics 2017-01-24 Darren C. Peets , Hasung Sim , Seongil Choi , Maxim Avdeev , Seongsu Lee , Su Jae Kim , Hoju Kang , Docheon Ahn , Je-Geun Park