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Using synchrotron X-rays and neutron diffraction we disentangle spin-lattice order in highly frustrated ZnCr$_2$O$_4$ where magnetic chromium ions occupy the vertices of regular tetrahedra. Upon cooling below 12.5 K the quandary of…

Strongly Correlated Electrons · Physics 2009-05-14 S. Ji , S. -H. Lee , C. Broholm , T. Y. Koo , W. Ratcliff , S-W. Cheong , P. Zschack

Magnetic transition phenomena in cubic chiral antiferromagnet EuPtSi with $T_{\rm N}$=4.0~K were investigated by means of single crystal neutron diffraction. At 0.3~K in the ground state, magnetic peaks emerge at positions represented by an…

A caged compound CeOs2Al10, crystallizing in the orthorhombic YbFe2Al10-type structure, undergoes a mysterious phase transition at T_0=29 K. We report the results of electron diffraction, magnetization, and magnetoresistance for single…

Strongly Correlated Electrons · Physics 2015-05-19 Y. Muro , J. Kajino , K. Umeo , K. Nishimoto , R. Tamura , T. Takabatake

Ferroelectricity in the incommensurate helical magnetic phase (below TN, 43K) of alpha CaCr2O4 has been confirmed by pyroelectric measurements. Magnetoelectric and magnetodielectric coupling exist below TN and are proportional to the square…

Materials Science · Physics 2012-08-03 Kiran Singh , Charles Simon , Pierre Toledano

We report the results of magnetization, heat capacity and neutron scattering studies of LaVO3 single crystals. From the neutron diffraction studies, it was found that the compound is magnetically ordered with a C-type antiferromagnetic spin…

Strongly Correlated Electrons · Physics 2009-11-13 L. D. Tung , A. Ivanov , J. Schefer , M. R. Lees , G. Balakrishnan , D. McK Paul

We have synthesized single crystals of Na$_3$Co$_2$SbO$_6$ and characterized the structure and magnetic order by measuring anisotropic magnetic properties, heat capacity, x-ray and neutron single crystal diffraction. Magnetic properties and…

Strongly Correlated Electrons · Physics 2019-07-17 J. -Q. Yan , S. Okamoto , Y. Wu , Q. Zheng , H. D. Zhou , H. B. Cao , M. A. McGuire

Earlier, the linear magnetoelectric effect of chromium sesquioxide Cr_2 O_3 has been determined experimentally as a function of temperature. One measures the electric field-induced magnetization on Cr_2 O_3 crystals or the magnetic…

General Relativity and Quantum Cosmology · Physics 2009-11-13 Friedrich W. Hehl , Yuri N. Obukhov , Jean-Pierre Rivera , Hans Schmid

A study of the magnetic properties of the frustrated rare earth oxide SrGd2O4 has been completed using bulk property measurements of magnetization, susceptibility and specific heat on single crystal samples. Two zero-field phase transitions…

Strongly Correlated Electrons · Physics 2015-06-22 O. Young , G. Balakrishnan , M. R. Lees , O. A. Petrenko

The results of ac and dc magnetic susceptibility isothermal magnetization and heat-capacity measurements as a function of temperature (T) are reported for Sr3NiRhO6 and Sr3NiPtO6 containing magnetic chains arranged in a triangular fashion…

Strongly Correlated Electrons · Physics 2009-11-13 Niharika Mohapatra , Kartik K Iyer , Sudhindra Rayaprol , E. V. Sampathkumaran

Crystal structure, electronic structure, and magnetic behavior of the spin-1/2 quantum magnet Na1.5VOPO4F0.5 are reported. The disorder of Na atoms leads to a sequence of structural phase transitions revealed by synchrotron x-ray powder…

The magnetic phases of a triangular-lattice antiferromagnet, CuCrO$_2$, were investigated in magnetic fields along to the $c$ axis, $H$ // [001], up to 120 T. Faraday rotation and magneto-absorption spectroscopy were used to unveil the rich…

Strongly Correlated Electrons · Physics 2017-11-22 Atsuhiko Miyata , Oliver Portugall , Daisuke Nakamura , Kenya Ohgushi , Shojiro Takeyama

Using powder neutron diffraction we have discovered an unusual magnetic order-order transition in the Ising spin chain compound Ca3Co2O6. On lowering the temperature an antiferromagnetic phase with propagation vector k=(0.5,-0.5,1) emerges…

Strongly Correlated Electrons · Physics 2011-05-17 S. Agrestini , C. L. Fleck , L. C. Chapon , C. Mazzoli , A. Bombardi , M. R. Lees , O. A. Petrenko

We present the results of structural and magnetic phase comparisons of the iron oxychalcogenides La$_{2}$O$_{2}$Fe$_{2}$O$M$$_{2}$ ($M$ = S, Se). Elastic neutron scattering reveals that $M$ = S and Se have similar nuclear structures at room…

Strongly Correlated Electrons · Physics 2019-01-30 B. Freelon , Z. Yamani , Ian Swainson , R. Flauca , Yu Hao Liu , L. Craco , M. S. Laad , Meng Wang , Jiaqi Chen , R. J. Birgeneau , Minghu Fang

A 2-Q antiferromagnetic order of the ferromagnetic dimers was found below TN = 2.9 K in the Shastry-Sutherland lattice BaNd2ZnS5 by single crystal neutron diffraction. The magnetic order can be understood by the orthogonal arrangement of…

Strongly Correlated Electrons · Physics 2023-07-07 Madalynn Marshall , Brianna R. Billingsley , Xiaojian Bai , Qianli Ma , Tai Kong , Huibo Cao

The AR$_2$O$_4$ family (R = rare earth) have recently been attracting interest as a new series of frustrated magnets, with the magnetic R atoms forming zigzag chains running along the $c$-axis. We have investigated polycrystalline…

Strongly Correlated Electrons · Physics 2015-06-22 A. A. Aczel , L. Li , V. O. Garlea , J. -Q. Yan , F. Weickert , M. Jaime , B. Maiorov , R. Movshovich , L. Civale , V. Keppens , D. Mandrus

Ho$_3$ScO$_6$ harbours a frustrated Maple Leaf Lattice (MLL). It crystalizes in the Mg$_3$TeO$_6$-type structure, and has a centrosymmetric trigonal space group (R$\bar{3}$). This system contains stacked layers of magnetic rings along the…

Strongly Correlated Electrons · Physics 2024-10-29 C. Aguilar-Maldonado , R. Feyerherm , K. Prokeš , L. Keller , B. Lake

We investigated the magnetic phase diagram of single crystals of SrNdFeO$_{4}$ by measuring the magnetic properties, the specific heat and the dielectric permittivity. The system has two magnetically active ions, Fe$^{3+}$ and Nd$^{3+}$.…

Materials Science · Physics 2015-06-05 J. M. Hwang , E. S. Choi , H. D. Zhou , Y. Xin , J. Lu , P. Schlottmann

Structural and magnetic properties of a two-dimensional spin-$\frac{5}{2}$ frustrated triangular lattice antiferromagnet NH$_{4}$Fe(PO$_{3}$F)$_2$ are explored via x-ray diffraction, magnetic susceptibility, high-field magnetization, heat…

Materials Science · Physics 2025-02-11 S. Mohanty , K. M. Ranjith , C. S. Saramgi , Y. Skourski , B. Büchner , H. -J. Grafe , R. Nath

The chain-like system Ba_{3}Cu_{3}Sc_4O_{12} has potentially interesting magnetic properties due to the presence of Cu^{2+} and a structure-suggested low-dimensionality. We present magnetization M versus magnetic field H and temperature T,…

Strongly Correlated Electrons · Physics 2012-11-16 B. Koteswararao , A. V. Mahajan , F. Bert , P. Mendels , J. Chakraborty , V. Singh , I. Dasgupta , S. Rayaprol , V. Siruguri , A. Hoser , S. D. Kaushik

MnWO4 has attracted attention because of its ferroelectric property induced by frustrated helical spin order. Strong spin-lattice interaction is necessary to explain ferroelectricity associated with this type of magnetic order.We have…

Materials Science · Physics 2009-11-13 R. P. Chaudhury , F. Yen , C. R. dela Cruz , B. Lorenz , Y. Q. Wang , Y. Y. Sun , C. W. Chu
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