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The synthesis of SrRuO3 under high-pressure oxygen produces a nonstoichiometric form with randomly distributed vacancies on the Ru-sites, along with a significantly reduced ferromagnetic ordering temperature. In order to gain additional…

We report an experimental and computational study of magnetic and electronic properties of the layered Ru(V) oxide SrRu2O6 (hexagonal, P-3 1m), which shows antiferromagnetic order with a N\'eel temperature of 563(2) K, among the highest for…

We investigate the role of long range ferromagnetic order in the electronic structure of Sr$_{1-x}$Ca$_x$RuO$_3$ using high resolution photoemission spectroscopy. SrRuO$_3$ is a ferromagnetic metal but isostructural, isoelectronic CaRuO$_3$…

Strongly Correlated Electrons · Physics 2007-05-24 Ravi Shankar Singh , V. R. R. Medicherla , Kalobaran Maiti

Pressure effects on the electron transport and structure of Nd1-xSrxMnO3 (x = 0.45, 0.5) were investigated in the range from ambient to ~6 GPa. In Nd0.55Sr0.45MnO3, the low-temperature ferromagnetic metallic state is suppressed and a low…

Condensed Matter · Physics 2009-11-10 Congwu Cui , Trevor A. Tyson , Zhiqiang Chen , Zhong Zhong

Magnetic properties of polycrystalline CaMn1-xRuxO3 (x = 0 - 0.5) samples were investigated in the temperature range 4.2 - 250 K, under external magnetic field up to 15 kOe and under hydrostatic pressure up to 12 kbar. Transport properties…

Strongly Correlated Electrons · Physics 2009-11-11 V. Markovich , M. Auslender , I. Fita , R. Puzniak , C. Martin , A. Wisniewski , A. Maignan , B. Raveau , G. Gorodetsky

We present $^{77}$Se-NMR measurements on single-crystalline FeSe under pressures up to 2 GPa. Based on the observation of the splitting and broadening of the NMR spectrum due to structural twin domains, we discovered that static, local…

Strongly Correlated Electrons · Physics 2017-12-13 P. Wiecki , M. Nandi , A. E. Böhmer , S. L. Bud'ko , P. C. Canfield , Y. Furukawa

We investigated complex magnetic properties of multifunctional LaCrO3-LaFeO3 system. The magnetic measurements substantiate the presence of competing complex magnetic ordering against temperature, showing paramagnetic to ferrimagnetic…

Strongly Correlated Electrons · Physics 2019-08-20 Brajesh Tiwari , Ambesh Dixit , M. S. Ramachandra Rao

The magnetic properties of Fe1.03Te under hydrostatic pressure up to p ~ 5.7 GPa were investigated by means of muon spin rotation, dc magnetization, and neutron depolarization measurements. With increasing pressure the antiferromagnetic…

We have performed the powder neutron diffraction measurements on the solid solutions of SrRu_{1-x}Mn_xO_3, and found that the itinerant ferromagnetic order observed in pure SrRuO_3 changes into the C-type antiferromagnetic (AF) order with…

Strongly Correlated Electrons · Physics 2007-05-23 M. Yokoyama , C. Satoh , A. Saitou , H. Kawanaka , H. Bando , K. Ohoyama , Y. Nishihara

We have studied the effects of the isoelectronic substitution of Ru for Fe in polycrystalline samples of the spin density wave (SDW) material PrFeAsO. Crystal structures from powder x-ray diffraction at room temperature and transport…

Superconductivity · Physics 2009-08-05 Michael A. McGuire , David J. Singh , Athena S. Sefat , Brian C. Sales , David Mandrus

We present a thorough $^{77}$Se NMR study of a single crystal of the magnetoelectric compound Cu$_2$OSeO$_3$. The temperature dependence of the local electronic moments extracted from the NMR data is fully consistent with a magnetic phase…

Strongly Correlated Electrons · Physics 2010-09-17 M. Belesi , I. Rousochatzakis , H. C. Wu , H. Berger , I. V. Shvets , F. Mila , J. P. Ansermet

We have studied the Tb$_2$Sn$_2$O$_7$ frustrated magnet by neutron diffraction under isotropic pressure of 4.6 GPa, combined with uniaxial pressure of 0.3 GPa, in the temperature range 0.06 K$<$T$<$100 K. Magnetic order persists under…

Strongly Correlated Electrons · Physics 2015-05-13 I. Mirebeau , I. Goncharenko , H. Cao , A. Forget

We report high-pressure magnetization and $^{35}$Cl NMR studies on $\alpha$-RuCl$_3$ with pressure up to 1.5~GPa. At low pressures, the magnetic ordering is identified by both the magnetization data and the NMR data, where the $T_N$ shows a…

Strongly Correlated Electrons · Physics 2017-12-06 Y. Cui , J. Zheng , K. Ran , Jinsheng Wen , Zhengxin Liu , B. Liu , Wenan Guo , Weiqiang Yu

Neutron diffraction and muon spin relaxation measurements are used to obtain a detailed phase diagram of Pr(Fe,Ru)AsO. The isoelectronic substitution of Ru for Fe acts effectively as spin dilution, suppressing both the structural and…

Magnetic nanoparticles of gamma-Fe2O3 coated by organic molecules and suspended in liquid and solid matrices, as well as a non-diluted magnetic fluid have been studied by electron magnetic resonance (EMR) at 77-380 K. Slightly asymmetric…

Materials Science · Physics 2009-11-11 N. Noginova , F. Chen , T. Weaver , E. P. Giannelis , A. B. Bourlinos , V. A. Atsarkin

In the correlated metal URhGe ferromagnetic order (T_C = 9.5 K) and superconductivity (T_s= 0.25 K) coexist at ambient pressure. Here we report on alloying URhGe by Ru, which enables one to tune the Curie temperature to 0 K. URuGe has a…

Strongly Correlated Electrons · Physics 2009-11-11 S. Sakarya , N. H. van Dijk , N. T. Huy , A. de Visser

The low-temperature antiferromagnetic state of the Sm-ions in both nonsuperconducting SmFeAsO and superconducting SmFeAsO$_{0.9}$F$_{0.1}$ single crystals was studied by magnetic torque, magnetization, and magnetoresistance measurements in…

Detailed structural measurements were conducted on a new perovskite, ScMnO3, and on orthorhombic LuMnO3. Complementary density functional theory (DFT) calculations were carried out, and predict that ScMnO3 possesses E-phase magnetic order…

Strongly Correlated Electrons · Physics 2015-06-19 T. Yu , T. A. Tyson , H. Y. Chen , A. M. M. Abeykoon , Y. -S. Chen , K. H. Ahn

We have investigated the effect of site dilution with substitution of nonmagnetic element in SrRu$_{1-x}$Ti$_x$O$_3$ ($x$ $\leq$ 0.7). The nature of ferromagnetic state in SrRuO$_3$ is believed to be of itinerant type with transition…

Strongly Correlated Electrons · Physics 2017-02-06 Renu Gupta , A K Pramanik

Recent studies have brought $\alpha$-RuCl$_3$ to the forefront of experimental searches for materials realizing Kitaev spin-liquid physics. This material exhibits strongly anisotropic exchange interactions afforded by the spin-orbit…

Strongly Correlated Electrons · Physics 2018-02-21 Stephen M. Winter , Kira Riedl , David Kaib , Radu Coldea , Roser Valenti
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