Structure and Magnetic Properties of Eu2-xCexCu1-yNiyO4+α-δ

Electron-doped superconducting cuprates of Eu2-xCexCu1-yNiyO4+a-d in under-doped region with x = 0.12 and y = 0, 0.01, 0.02, 0.03 and 0.05 have been prepared, characterized and investigated in order to study the effect of Ni impurity to the magnetic properties of electron doped superconducting cuprates. All main peaks of tetragonal and T’ structure configuration of ECCO were observed in all samples. Temperature dependence of dc magnetic-susceptibility on field cooling at 5 Oe for Eu1.88Ce0.12Cu1-yNiyO4+a-d with d values from 0.0496 to 0.08322 shows diamagnetic behavior for sample with y = 0, starting from about 11 K. For sample with y = 0.01, Tc onset decreases to be around 4 K. The superconductivity disappeared at y ≥ 0.02 indicating 2 % Ni substitution to the Cu has weakened the spin-spin correlation and reduced the value of magnetization in ECCO system.

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The Dependence of Magnetic Moments on Magnetic Impurities of Ni in Eu1.86Ce0.14Cu1-yNiyO4+a-d

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.860.148 ◽

2020 ◽

Vol 860 ◽

pp. 148-153

Author(s):

Muhammad Abdan Syakuur ◽

Yati Maryati ◽

Utami Widyaiswari ◽

Dita Puspita Sari ◽

Togar Saragi ◽

...

Keyword(s):

Magnetic Susceptibility ◽

Low Temperatures ◽

Unit Volume ◽

Magnetic Impurity ◽

Magnetic Moments ◽

Magnetic Impurities ◽

Superconducting Cuprates ◽

Susceptibility Data ◽

Diamagnetic Behavior ◽

Volume Unit

The partially substitution of magnetic impurity Ni for Cu in electron-doped superconducting cuprates of Eu2-xCexCu1-yNiyO4+a-d with x = 0.14 and y = 0, 0.01 and 0.02 has been studied in order to investigate the effect of Ni impurity on structure and the value of magnetic moments per unit volume extracted from susceptibility data in under-doped region. Magnetic-susceptibility measurements were carried out at low temperatures down to 2 K. For sample with y = 0, diamagnetic behavior is observed starting from about 9 K. The superconductivity disappeared at y ³ 0.01. The values of magnetic moment in every volume unit decreased with increasing Ni.

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Magnetische Eigenschaften von [Cu{OCH2CH2N(C4H9)2}NCO]4 im Bereich von 10 bis 240 K / Magnetic Properties of [Cu{OCH2CH2N(C4H9)2}NCO]4 in the Temperature Range from 10 to 240 K

Zeitschrift für Naturforschung B ◽

10.1515/znb-1998-0112 ◽

1998 ◽

Vol 53 (1) ◽

pp. 58-62

Author(s):

W. Münch ◽

L. Walz ◽

M. König

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Temperature Dependence ◽

Title Compound ◽

Temperature Range ◽

New Phase ◽

Exchange Parameters

The magnetic properties of the title compound were re-investigated, since a new phase below 240 K has recently been identified. The exchange parameters were evaluated from the temperature dependence of the magnetic susceptibility with a Heisenberg operator taking into account the high pseudo-symmetry of the tetrameric units observed.

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Magnetic properties of rare earth chromium borates at high temperatures

Izvestiya vysshikh uchebnykh zavedenii. Fizika ◽

10.17223/00213411/64/5/166 ◽

2021 ◽

pp. 166-170

Author(s):

O.K. Kuvandikov ◽

◽

N.I. Leonyuk ◽

V.V. Malsev ◽

M.M. Kuzmin ◽

...

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Rare Earth ◽

Temperature Dependence ◽

High Temperatures ◽

Wide Temperature Range ◽

Magnetic Moments ◽

Chemical Formula ◽

Temperature Range ◽

Curie Temperatures

Temperature dependence of the magnetic susceptibility has been studied for rare-earth borates NdCr3(BO3)4, SmCr3(BO3)4 and LuCr3(BO3)4 by the Faradey method in the wide temperature range (300-1200 K). The dependence for each phase follows the Curi - Weis law. The Curie temperatures, Neel temperatures and magnetic moments corresponding to the chemical formula of the crystals, have been found.

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Temperature Dependence of Electronic and Magnetic Properties of (DOEO)4[HgBr4]·TCE Single Crystals

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.233-234.173 ◽

2015 ◽

Vol 233-234 ◽

pp. 173-176

Author(s):

Alisa Chernenkaya ◽

Oksana Koplak ◽

Katerina Medjanik ◽

Aleksandr Kotov ◽

Roman Morgunov ◽

...

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Temperature Dependence ◽

Ground State ◽

Carrier Density ◽

Charge Carrier Density ◽

Pronounced Increase ◽

Electronic And Magnetic Properties ◽

Increasing Temperature ◽

Semiconducting Behavior

The temperature dependence of electronic and magnetic properties of the organic charge-transfer salt (DOEO)4[HgBr4]·TCE was investigated using magnetometry. The magnetic susceptibility shows a maximum at 40 K followed by an onset of a pronounced increase at 70 K and a constant behavior above 120 K. Implications on the charge carrier density are discussed. Combining the magnetometry with resistivity and ESR measurements we propose a sequence of insulating, metallic and semiconducting behavior with increasing temperature. Our results indicate that (DOEO)4[HgBr4]·TCE is close to the boundary between an insulating and conducting ground state.

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The magnetic properties of antimony

Mathematical Proceedings of the Cambridge Philosophical Society ◽

10.1017/s0305004100019216 ◽

1936 ◽

Vol 32 (3) ◽

pp. 499-502 ◽

Cited By ~ 14

Author(s):

D. Shoenberg ◽

M.Zaki Uddin

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Temperature Dependence ◽

Trigonal Axis ◽

Increasing Temperature

The magnetic susceptibility of antimony both parallel and perpendicular to the trigonal axis is independent of field down to 4° K. The numerical value of the susceptibility parallel to the trigonal axis decreases with increasing temperature, similarly to that of bismuth, but perpendicular to the trigonal axis there is no temperature dependence. The results at higher temperatures are compared with earlier measurements and the comparison suggests that the susceptibility of antimony, like that of bismuth, is very sensitive to addition of foreign elements.

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Possible Existence of the Stripe Correlations in Electron-Doped Superconducting Cuprates Eu1.85Ce0.15Cu1-yNiyO4+α-δ Studied by Muon-Spin-Relaxation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.896.354 ◽

2014 ◽

Vol 896 ◽

pp. 354-357 ◽

Cited By ~ 8

Author(s):

Risdiana ◽

Lusi Safriani ◽

Wahyu Alamsyah Somantri ◽

Togar Saragi ◽

Tadashi Adachi ◽

...

Keyword(s):

Spin Relaxation ◽

Magnetic Order ◽

Muon Spin ◽

Spin Correlation ◽

Muon Spin Relaxation ◽

Superconducting Cuprates ◽

Range Magnetic Order ◽

Ni Substitution ◽

Long Range Magnetic Order ◽

Muon Spin Precession

Partially Ni-substituted electron-doped superconducting cuprates of Eu1.85Ce0.15Cu1-yNiyO4+α-δ (ECCNO) with y = 0, 0.01, 0.02 and 0.05 have been studied by muon-spin-relaxation (mSR) measurements, in order to elucidate whether or not the dynamical stripe correlations of spins and charges exist in electron-doped cuprates. It has been found that the development of the Cu-spin correlation is induced at low temperatures through the Ni substitution and that, for y = 0.02, a muon-spin precession due to a long-range magnetic order has been observed at 10 K. These results suggest a possibility that the stripe model can globally explain the high-Tc superconductivity in both hole- and electron-doped cuprates.

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STRUCTURAL, ELECTRICAL AND MAGNETIC PROPERTIES OF HIGH-TcYBa1.5Ca0.5Cu3O6+δ SUPERCONDUCTOR

Modern Physics Letters B ◽

10.1142/s0217984996001528 ◽

1996 ◽

Vol 10 (27) ◽

pp. 1349-1353

Author(s):

I. POP ◽

L. HOMORODEAN ◽

I. BURDA ◽

M. ANDRECUT

Keyword(s):

Magnetic Field ◽

Magnetic Properties ◽

Magnetic Susceptibility ◽

Critical Temperature ◽

Temperature Dependence ◽

Crystalline Structure ◽

Magnetic Field Intensity ◽

Electrical And Magnetic Properties ◽

Diamagnetic Transition ◽

The Magnetic Field

A high-Tc YBa 1.5 Ca 0.5 Cu 3 O 6+δ superconductor was synthesized, with the critical temperature Tc=84.9 K. The crystalline structure is orthorhombic with the lattice parameters a=3.8665 Å, b=3.9217 Å and c=11.7652 Å, characteristic for the 123 superconductors. The diamagnetic transition in the temperature dependence of the magnetic susceptibility strongly depends on the recycling of the samples and the onset of superconductibility is depressed by the magnetic field intensity.

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ANIZOTROPIE MAGNETICKÉ SUSCEPTIBILITY HORNIN NA KONTAKTU METABAZITOVÉ A DIORITOVÉ ZÓNY BRNĚNSKÉHO MASIVU V OKOLÍ VELKÉ BABY U JINAČOVIC

Geologické výzkumy na Moravě a ve Slezsku ◽

10.5817/gvms2015-1-2-29 ◽

2016 ◽

Vol 22 (1-2) ◽

Author(s):

Lukáš Mareček ◽

Rostislav Melichar

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Temperature Dependence ◽

Anisotropy Of Magnetic Susceptibility ◽

Small Contribution ◽

Normal Faulting ◽

Magnetic Lineation ◽

Rotational Movement ◽

Magnetic Fabrics ◽

Magnetic Foliation

An anisotropy of magnetic susceptibility and temperature dependence on magnetic susceptibility were used to reveal an evolution history along the contact of the Metabasite and Diorite zones of Brno massif north of Brno-Řečkovice. The analysis of temperature dependence of magnetic susceptibility indicated that magnetic properties of all rocks in this area are essentially controlled by magnetite with a very small contribution of pyrhotite and hematite. These minerals were formed later than the primary magmatic minerals. Therefore we assume that magnetic fabrics in studied rocks reflect deformational processes which affected these rocks. There are three patterns in anisotropy of magnetic susceptibility (AMS) in studied rocks. In the first pattern detected in diorites, the magnetic foliation is striking NE–SW, dipping to the NW and there is subvertical magnetic lineation. The second planar magnetic indicates a rotational movement of microgranite rocks along the contact of the Metabasite and Diorite zones. The last pattern found in rocks of the Metabasite zone is magnetic foliation striking NNE–SSW dipping on the NWW and magnetic lineation trending to the SW with plunge of 42° and it shows normal faulting of studied area.

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Temperature dependence of the magnetic properties of reservoir rocks and minerals and implications for in situ borehole predictions of petrophysical parameters

Geophysics ◽

10.1190/geo2011-0282.1 ◽

2012 ◽

Vol 77 (3) ◽

pp. WA211-WA221 ◽

Cited By ~ 2

Author(s):

Arfan Ali ◽

David K. Potter

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Temperature Dependence ◽

High Field ◽

Magnetic Measurements ◽

Clay Content ◽

Petrophysical Parameters ◽

Reservoir Rocks ◽

Fluid Permeability

Recent work has shown strong correlations between magnetic susceptibility and key petrophysical parameters such as clay content and fluid permeability. The magnetic measurements in previous work were mainly undertaken at ambient (room temperature) conditions on core samples. The present study involved theoretical modeling and experimentation on the temperature dependence of the magnetic properties (mass magnetization and magnetic susceptibility) of reservoir rocks and minerals over a range of low and high applied fields. It paves the way for correctly interpreting borehole magnetic susceptibility measurements, and accurately predicting petrophysical properties in situ, from a potentially new suite of low and high field borehole magnetic tools. The temperature dependent magnetic susceptibility measurements provide an improved means of quantifying the diamagnetic versus paramagnetic mineral content in reservoir rocks compared to a single ambient measurement. Paramagnetic clays, such as illite, are important in controlling the fluid permeability in many of these samples, and we again saw correlations between the magnetic measurements, paramagnetic clay content, and permeability. We also show how to derive ferrimagnetic mineral hysteresis curves by subtracting the high field magnetic data from the total signal. The resulting magnetic hysteresis curves give important information concerning the content (often only a few ppm, which X-ray diffraction cannot detect), mineralogy, and domain state of the ferrimagnetic particles.

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