On the Effect of Nanocrystallization and Disorder on the Magnetic Properties of Cu-Rich, FeMnCu Alloys

We report on the temperature dependencies of the Mössbauer spectra and the AC magnetic susceptibility measured in Cu-rich, FeMnCu samples prepared by mechanically alloying, using, on the one side, Cu and prealloyed FeMn powders and, on the other, pure element Cu, Mn, and Fe powders. From the correlation of the Mössbauer and susceptibility data we conclude about the basic characteristics of the phase distributions present in the different studied samples. Those distributions are a consequence of both the nanostructure induced upon milling and of the different signs of the Mn/Cu (negative) and Fe/Cu (positive) enthalpies of mixing. The proposed phase distributions are significantly different in the samples prepared from different precursors and this fact is analyzed in terms of the disproportion of the precursor FeMn alloy and in those of the favoured Mn/Cu interdiffusion and the hindered Fe/Cu one.

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THE EFFECT OF PARTIAL ATOMIC SUBSTITUTION ON ELECTRIC AND MAGNETIC PROPERTIES OF (Bi,Pb):2223 SINTERED SUPERCONDUCTORS

International Journal of Modern Physics B ◽

10.1142/s0217979203022763 ◽

2003 ◽

Vol 17 (26) ◽

pp. 4675-4681 ◽

Cited By ~ 1

Author(s):

A. V. POP ◽

M. POP ◽

I. I. GERU

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Electrical Resistance ◽

Ac Susceptibility ◽

Partial Substitution ◽

Superconducting Transition ◽

Ac Magnetic Susceptibility ◽

Atomic Concentration ◽

Susceptibility Data ◽

Atomic Substitution

The effect of partial substitution of Ca by x = 0.02 La on the electrical and magnetically properties of two (Bi,Pb):2223 superconductor ceramic S1 and S2 (with different Pb and Sr atomic concentration) were investigated by using electrical resistance and AC magnetic susceptibility measurements. The parameters from linear resistivity data in the normal state and superconducting transition are sensitive to the compounds stoechiomerty. The intergrain critical current density JcJ(T) dependence near Tc obtained from immaginary AC susceptibility data agrees with the assumption of SNS intergrain junctions.

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Synthesis, Structures and Magnetic Properties of a Family of One-Dimensional Oxides

MRS Proceedings ◽

10.1557/proc-453-379 ◽

1996 ◽

Vol 453 ◽

Cited By ~ 1

Author(s):

H.-C. Zur Loye ◽

P. Núñez ◽

M. A. Rzeznik

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Rietveld Refinement ◽

Diffraction Data ◽

X Ray Diffraction ◽

Magnetic Susceptibility Data ◽

One Dimensional ◽

X Ray ◽

Susceptibility Data ◽

The One

AbstractThe one-dimensional compounds Sr3MgPtO6, Sr3MgIrO6, Sr3MgRhO6, Sr3GdRhO6, have been synthesized and structurally characterized by Rietveld refinement of powder X-ray diffraction data. All four compounds are isostructural with the rhombohedral K4CdCl6-type structure. The structure consists of infinite one-dimensional chains of alternating face-shared MO6 octahedra (M = Pt, Ir, Rh) and M′O6 (M′ = Gd, Mg) trigonal prisms. The strontium cations are located in a distorted square antiprismatic environment. Magnetic susceptibility data show that both Sr3MgIrO6 and Sr3MgRhO6 obey the Curie-Weiss law with θ = −6(1) K, and θ= −15(3)K, respectively. Sr3GdRhO6 obeys the Curie law with μeff = 7.80 B.M, consistent with an oxidation state of +3 for both rhodium and gadolinium.

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Magnetic Properties of Liquid Crystals Incorporating Metal Centres

MRS Proceedings ◽

10.1557/proc-175-249 ◽

1989 ◽

Vol 175 ◽

Cited By ~ 5

Author(s):

Wolfgang Haase ◽

Stefan Gehring ◽

Bettina Borchers

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Liquid Crystals ◽

Molecular Interactions ◽

Magnetic Susceptibility Data ◽

Susceptibility Data ◽

Magnetic Effects ◽

Diamagnetic Anisotropy

AbstractMagnetic susceptibility data (300–520 K) of monomeric and dimeric mesogenic copper(II) compounds are presented. Different magnetic effects arising from the paramagnetic Cu(II)-centres and the diamagnetic anisotropy of the mesogenic groups are observed and discussed with respect to possible inter molecular interactions.

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Hydrothermal synthesis, structure and magnetic properties of a three-dimensional cobalt(ii) – aminophenyltetrazolate coordination polymer

Dalton Transactions ◽

10.1039/c4dt00456f ◽

2014 ◽

Vol 43 (19) ◽

pp. 7263-7268 ◽

Cited By ~ 5

Author(s):

Tiffany M. Smith ◽

Michael Tichenor ◽

Yuan-Zhu Zhang ◽

Kim R. Dunbar ◽

Jon Zubieta

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Hydrothermal Synthesis ◽

Coordination Polymer ◽

Three Dimensional ◽

Magnetic Behavior ◽

Ac Magnetic Susceptibility

The three-dimensional [Co3(OH)2(H2O)2(aptet)4] exhibits magnetic properties consistent with a ferrimagnetic chain with the non-compensating resultant moment of one Co(ii) per trinuclear Co(ii) subunit and ac magnetic susceptibility indicative of glassy-like magnetic behavior.

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The Effect of Partial Substitution of Non-Magnetic Impurity Zn on the Magnetic Moments of Eu1.88Ce0.12Cu1-yZnyO4+α-δ

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1028.15 ◽

2021 ◽

Vol 1028 ◽

pp. 15-20

Author(s):

Muhammad Abdan Syakuur ◽

Yati Maryati ◽

Togar Saragi ◽

Risdiana

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

Magnetic Impurity ◽

Magnetic Moments ◽

Magnetic Behavior ◽

Partial Substitution ◽

X Ray Diffraction ◽

Magnetic Susceptibility Data ◽

Susceptibility Data ◽

Volume Unit

Structure and magnetic properties of electron-doped superconducting cuprates have been investigated in order to study the effect of magnetic impurity to its physical properties. Here, we reported structure and magnetic properties of Eu1.88Ce0.12Cu1-yZnyO4+α-δ (ECCZO) with y = 0 and 0.03. The properties of ECCZO have been studied from X-ray diffraction data and temperature dependence of magnetic susceptibility data, to elucidate the effect of partial substitution of non-magnetic impurity Zn for Cu to its structure, Tc and the value of magnetic moments per unit volume extracted from susceptibility data in normal state. Magnetic-susceptibility measurements were carried out down to 2 K on-field cooling at 5 Oe for Eu1.88Ce0.12Cu1-yZnyO4+a-d with y = 0 and 0.03. For ECCZO sample with y = 0 and d = 0.0669 indicated the change of magnetic behavior from paramagnetic to diamagnetic below 12 K which is addressed to the Tc onset of this samples. Diamagnetic behavior is observed starting from about 12 K. Above 12 K, all samples show paramagnetic behavior with the values of the magnetic moment in every volume unit increased with increasing Zn.

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Crystal Structure and Magnetic Properties of (2,2'-Dipyridyl)-(2-acetylphenolato)copper(II) Perchlorate

Zeitschrift für Naturforschung B ◽

10.1515/znb-2002-1009 ◽

2002 ◽

Vol 57 (10) ◽

pp. 1129-1132 ◽

Cited By ~ 3

Author(s):

A. Elmali ◽

Y. Elerman ◽

I. Svoboda

Keyword(s):

Crystal Structure ◽

Magnetic Properties ◽

Magnetic Susceptibility ◽

Magnetic Moment ◽

Basal Plane ◽

Effective Magnetic Moment ◽

Mixed Ligand ◽

Magnetic Susceptibility Data ◽

Susceptibility Data ◽

Dimeric Unit

The mixed-ligand dinuclear complex (2,2'-dipyridyl)-(2-acetylphenolato)copper(II) perchlorate was synthesized and its crystal structures determined. The structure consists of a dimeric unit involving a planar Cu2O2 group. The coordination sphere of the Cu atom can be described as an alongated octahedron where the basal plane is formed by the two N atoms of the 2,2'-dipyridyl molecule and the two O atoms of the acetophenon anion. Two apical Cu - O contacts complete the 4+2 coordination of the Cu atoms. They correspond to one of the O atoms of the perchlorate anion and to the O atom of the second unit. Magnetic susceptibility data obey the Curie-Weiss law with θ = -8.1(2) K. The decreasing of the effective magnetic moment from 1.94(8) μB at 300 K to 1.86(8) μB at 70 K and the negative Weiss constant indicate weak antiferromagnetic interactions between the two copper atoms in the dimeric units.

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Manganese/Yttrium Codoped Strontium Nanohexaferrites: Evaluation of Magnetic Susceptibility and Mossbauer Spectra

Nanomaterials ◽

10.3390/nano9010024 ◽

2018 ◽

Vol 9 (1) ◽

pp. 24 ◽

Cited By ~ 50

Author(s):

Munirah Almessiere ◽

Yassine Slimani ◽

Hakan Güngüneş ◽

Abdulhadi Baykal ◽

S.V. Trukhanov ◽

...

Keyword(s):

Magnetic Field ◽

Magnetic Properties ◽

Magnetic Susceptibility ◽

Mössbauer Spectra ◽

Ac Susceptibility ◽

Sol Gel ◽

Hyperfine Magnetic Field ◽

Analytical Techniques ◽

Magnetic Interactions ◽

Mossbauer Spectra

Manganese (Mn)- and yttrium (Y)-substituted Sr-nanohexaferrites (MYSNHFs) of composition Sr1−xMnxFe12−xYxO19 (with 0.0 ≤ x ≤ 0.5) were prepared by citrate sol-gel autocombustion method. As-prepared MYSNHFs were characterized via diverse analytical techniques to determine the influence of Mn and Y cosubstitution on their microstructures and magnetic properties. 57Fe Mössbauer spectra of the MYSNHFs were used to evaluate the variation in the line width, isomer shift, quadrupole splitting, and hyperfine magnetic field values. It was shown that the dopant ions could preferentially occupy the 12k, 4f2, and 2b sites. Furthermore, the observed shift in the blocking temperatures of the studied MYSNHFs towards lower values with rising Mn2+ and Y3+ contents was attributed to the overall particles size reduction. Meanwhile, the AC susceptibility of the proposed MYSNHFs revealed that the magnetic interactions were weakened with the increase in dopant contents which was ascribed to the replacement of both Sr2+ and Fe3+ ions by the Mn2+ and Y3+ dopants.

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