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Magnetic properties of La$_{1-x}$Ca$_{x}$CoO$_{3}$ (0.10 $\leq x\leq$ 0.25) are systemically studied in this work. All the samples exhibits the ferromagnetic state at low temperatures. However, their inverse low-field magnetic…

强关联电子 · 物理学 2012-07-13 Shiming Zhou , Yuqiao Guo , Laifa He , Jiyin Zhao , Lei Shi

We report results of structural, magnetic and transport properties of single crystal CaRu1-xCrxO3 (0≤x≤0.36) and SrRu1-xCrxO3 (0≤x≤0.30). Cr substitution as low as x=0.08 drives CaRu1-xCrxO3 from the paramagnetic…

强关联电子 · 物理学 2007-05-23 V. Durairaj , E. Elhami , S. Chikara , X. N. Lin , A. Douglass , G. Cao P. Schlottmann , E. S. Choi , R. P. Guertin

Single phase, sol-gel prepared Cu1-xFexO (0<x<0.125) are characterized in terms of structural, electronic and magnetic properties. Using dielectric and magnetic studies we investigate the coupling of electron and spin. The electrical…

The subtle interplay of randomness and quantum fluctuations at low temperatures gives rise to a plethora of unconventional phenomena in systems ranging from quantum magnets and correlated electron materials to ultracold atomic gases.…

无序系统与神经网络 · 物理学 2014-01-15 L. Demko , S. Bordacs , T. Vojta , D. Nozadze , F. Hrahsheh , C. Svoboda , B. Dora , H. Yamada , M. Kawasaki , Y. Tokura , I. Kezsmarki

The dc magnetization (M) and electrical resistivity (\rho) as functions of magnetic field and temperature are reported for a series of lightly electron dopedCa(1-x)La(x)MnO(3) (0<=x<=0.10) specimens for which magnetization [Phys. Rev. B…

强关联电子 · 物理学 2007-05-23 C. Chiorescu , J. J. Neumeier , J. L. Cohn

Here, we report an evolution of structural, magnetic and transport behavior in doped SrRu$_{1-x}$Ga$_x$O$_3$ ($x$ $\le$ 0.2). The nonmagnetic dopant Ga$^{3+}$ (3$d^{10}$) not only acts for magnetic site dilution in SrRuO$_3$ but also it…

强关联电子 · 物理学 2019-10-10 Renu Gupta , Imtiaz Noor Bhatti , A K Pramanik

SrRuO$_3$ presents a rare example of ferromagnetism among the 4$d$ based oxides. While the nature of magnetic state in SrRuO$_3$ is mostly believed to be of itinerant type, recent studies suggest a coexistence of both itinerant and…

强关联电子 · 物理学 2018-08-01 Renu Gupta , Imtiaz Noor Bhatti , A. K. Pramanik

Magnetism in La$_{1-x}$Sr$_x$CoO$_3$ as a function of doping is investigated with X-ray absorption spectroscopy and X-ray magnetic circular dichroism at the O K edge, and corresponding first principles electronic structure calculations. For…

强关联电子 · 物理学 2012-10-15 S. Medling , Y. Lee , H. Zhang , J. F. Mitchell , J. W. Freeland , B. N. Harmon , F. Bridges

The magnetic ground state of perovskite structure CaRuO3 has been enigmatic for decades. Here we show that paramagnetic CaRuO3 can be made ferromagnetic by very small amounts of partial substitution of Ru by Ti. Magnetic hysteresis loops…

凝聚态物理 · 物理学 2009-11-07 T. He , R. J. Cava

Strongly correlated system with competing ground states are often poised close to the quantum critical point. External perturbations such as pressure, strain, electric field, and chemical doping can stabilise its ground state with exotic…

强关联电子 · 物理学 2024-04-23 Pooja , Bikash Saha , Nitesh Choudhary , Pradip K. Maji , A. K. Bera , S. M. Yusuf , Chanchal Sow

An investigation of La and Ca doped Sr4Ru3O10, featuring a coexistence of interlayer ferromagnetism and intralayer metamagnetism, is presented. La doping readily changes magnetism between ferromagnetism and metamagnetism by tuning the…

强关联电子 · 物理学 2009-11-11 S. Chikara , V. Durairaj , W. H. Song , Y. P. Sun , X. N. Lin , A. Douglass , G. Cao , P. Schlottmann

We report the structural, magnetic and electrical transport properties of Y$_2$Ir$_{2-x}$Cr$_x$O$_7$ pyrochlore iridates. The chemical doping leads to order of magnitude enhancement of electrical conductivity. The introduction of Cr3+ at…

材料科学 · 物理学 2019-07-24 Vinod Kumar Dwivedi , Soumik Mukhopadhyay

We report results of a magnetic and transport study of SrRu1-xMnxO3, i.e., Mn doped SrRuO3. The Mn doping drives the system from the itinerant ferromagnetic state (TC=165 K for x=0) through a quantum critical point at xc=0.39 to an…

强关联电子 · 物理学 2009-11-10 G. Cao , S. Chikara , X. N. Lin , E. Elhami , V. Durairaj , P. Schlottmann

The effect of electron doping on the structural, transport, and magnetic properties of Mn (IV) - rich Ca1-xYxMnO3 (x < 0.2) samples have been investigated using neutron diffraction, neutron depolarization, magnetization and resistivity…

材料科学 · 物理学 2016-02-09 Neetika Sharma , A. Das , C. L. Prajapat , Amit Kumar , M. R. Singh

Measurements of the specific heat on the system Ca$_{1-x}$La$_{x}$MnO$_{3}$ (% $x\leq 0.10$) are reported. Particular attention is paid to the effect that doping the parent compound with electrons by substitution of La for Ca has on the…

强关联电子 · 物理学 2007-05-23 A. L. Cornelius , B. Light , J. J. Neumeier

In this work, we study the effect of the magnetic dilution of Cr$^{3+}$ on the LaCrO$_3$ half doped with Al. Pure and half-doped samples were prepared by combustion method using urea as fuel. The crystal structure was investigated by X-ray…

材料科学 · 物理学 2015-02-23 Romualdo S. Silva , Petrucio Barrozo , N. O. Moreno , J. Albino Aguiar

CaRuO_3 is perovskite with an orthorhombic distortion and is believed to be close to magnetic ordering. Magnetic studies of single crystal and polycrystalline CaRu_{1-x}Cu_xO_3 (0\le x \le 15 at.%Cu) reveal that spin-glass-like transition…

强关联电子 · 物理学 2017-12-05 I. M. Bradaric , I. Felner , M. Gospodinov

A complex structural, magnetic and electric transport investigation shows that the Cr doping on Mn sites in the A-type antiferromagnet Pr0.44Sr0.56MnO3 provokes a non-uniform magnetic state with coexisting FM and AFM regions. Irrespective…

材料科学 · 物理学 2010-07-30 Z. Jirak , J. Hejtmanek , K. Knizek , M. Marysko , C. Martin , A. Maignan , M. Hervieu

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…

强关联电子 · 物理学 2010-09-17 M. Belesi , I. Rousochatzakis , H. C. Wu , H. Berger , I. V. Shvets , F. Mila , J. P. Ansermet

A quasi one-dimensional compound, Ca3CuRuO6, has been synthesized by solid-state reaction method and studied using magnetization (M) and heat capacity (C) measurements. This compound undergoes magnetic ordering (T_o) around 40 K, as…

强关联电子 · 物理学 2016-08-31 S. Rayaprol , E. V. Sampathkumaran
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