scholarly journals Study the structural and magnetic properties of rare-earth ions (La and Gd) doped Ba0.9575Ca0.0025Ti0.80685Mn0.002475Nb0.002475Zr0.1782O3 (BCTMNZ) ceramics

2015 ◽  
Vol 05 (04) ◽  
pp. 1520001 ◽  
Author(s):  
Radheshyam Rai ◽  
Poonam Kumari ◽  
M. A. Valente
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Hysteresis Loops ◽  
Solid State Reaction Method ◽  
Rare Earth Ions ◽  
Temperature Hysteresis ◽  
X Ray Diffraction ◽  
Conventional Solid State Reaction ◽  
Structural And Magnetic Properties ◽  
La Doped

In this paper, we investigated the influence of rare earth ([Formula: see text] and Gd) doped Ba[Formula: see text]RE[Formula: see text]Ca[Formula: see text]Ti[Formula: see text] Mn[Formula: see text]Nb[Formula: see text]Zr[Formula: see text]O3 (BCTMNZ) ceramics were fabricated by using a conventional solid-state reaction method. The doping effects of La and Gd on the structural and magnetic properties were studied. The structural pattern of the ceramic samples were investigated by X-ray diffraction and the results indicated that both samples shows an orthorhombic structure with pure phase. Strain and crystalline size values for Gd and La doped were 0.31–0.33% and [Formula: see text]–[Formula: see text]m, respectively. The room temperature hysteresis loops were obtained by using a vibrating sample magnetometer. La doped ceramic showed the higher value of magnetization i.e., [Formula: see text]B/f.u. as compared to Gd doped BLTMNZ ceramics.

Influence of rare-earth ions on structural and magnetic properties of CdFe2O4 ferrites

Rare Metals ◽  
2010 ◽  
Vol 29 (2) ◽  
pp. 168-173 ◽  
Author(s):  
Ashok Gadkari ◽  
Tukaram Shinde ◽  
Pramod Vasambekar
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Rare Earth Ions ◽  
Structural And Magnetic Properties

scholarly journals Investigation of the Structural and Magnetic Properties of the Light Rare Earth Elements and Their Intermetallic Compounds

1988 ◽  
Vol 41 (2) ◽  
pp. 155 ◽  
Author(s):  
DC Creagh
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Intermetallic Compounds ◽  
Light Rare Earth ◽  
X Ray Diffraction ◽  
X Ray ◽  
Radiation Sources ◽  
Structural And Magnetic Properties ◽  
Light Rare Earth Elements

The experimental requirements for the investigation of the structural and magnetic properties of the light rare earth elements and their intermetallic compounds at synchrotron radiation sources are discussed. Experimental techniques considered include X-ray topography, energy dispersive X-ray diffraction and X-ray powder diffraction.

Magnetic properties of (Sr1.85Ln0.15)FeMoO6 with Ln = Sr, La, Ce, Pr, Nd, Sm and Eu

2011 ◽  
Vol 239-242 ◽  
pp. 3109-3112 ◽  
Author(s):  
Qin Zhang ◽  
Qing Wang ◽  
Zhen Cui Sun ◽  
Ke Yan Wang
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Ionic Radius ◽  
Single Phase ◽  
Magnetic Measurements ◽  
Rare Earth Ions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rare Earth Doped ◽  
The Eu

Rare-earth-doped compounds (Sr1.85Ln0.15)FeMoO6(Ln=Sr, La, Ce, Pr, Nd, Sm and Eu) have been prepared by solid-state reaction. Crystal structure and magnetic properties were investigated by means of X-ray diffraction and magnetic measurements. All the samples are single phase and belong to the I4/m space group. Due to the competing contributions of electron doping and steric effects, the unit-cell volume of the doped compounds changes slightly and does not vary systematically with the ionic radius of the rare-earth ions. The temperature dependence of the magnetization of (Sr1.85Ln0.15)FeMoO6indicates that the Curie temperature of the doped compounds has increased upon doping, except for the Eu-doped compound.

scholarly journals Effect of Y3+ Substitution on Structural and Magnetic Properties of Ni0.25 Zn0.75YxFe2-xO4

2020 ◽  
Vol 68 (2) ◽  
pp. 111-116
Author(s):  
Sharmin Akhter ◽  
Probal Roy ◽  
Armin Anwar ◽  
MA Hossain ◽  
MNI Khan ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Solid State Reaction Method ◽  
Industrial Applications ◽  
Ferromagnetic Behavior ◽  
Conventional Solid State Reaction ◽  
Spinel Type ◽  
Sem Micrographs ◽  
Ray Density ◽  
Structural And Magnetic Properties ◽  
Xrd Patterns

The effect of Y3+ doping on the structural and magnetic properties of Ni0.25 Zn0.75YxFe2-xO4 [x= 0.00, 0.02, 0.04, 0.06 and 0.08] was investigated. The specimen was synthesized by conventional solid state reaction method where the sintering temperature was 1150oC for 3 hours. The structure of the specimens was inspected by XRD pattern and SEM micrographs. The XRD patterns delineate the formation of spinel type cubic structure. The lattice parameters, bulk density, X-ray density and porosity were investigated for all the samples. The SEM micrographs shows that the particles of all the composition are within 0.4 – 1.2 μm. M-H curves at room temperature exhibit the ferromagnetic behavior. The effect of Y3+ causes drastically variation on saturation magnetization (Ms), coercivity (Hc) and remanent magnetization (Mr). Moreover, the M-H curves delineate the soft ferromagnetic phenomenon which can be the reason of the acceptance of the specimen in industrial applications. Dhaka Univ. J. Sci. 68(2): 111-116, 2020 (July)

Spin State and Magnetic Properties of Nd1-xSrxCoO3 (0.1≤x≤0.5)

2013 ◽  
Vol 785-786 ◽  
pp. 676-679
Author(s):  
Yi Yun Yang
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Spin State ◽  
State Transition ◽  
Solid State Reaction Method ◽  
Experimental Result ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Spin State Transition ◽  
Intermediate Spin

In this paper, the rare earth cobaltite Nd1-xSrxCoO3 (0.1≤x≤0.5) samples were prepared using conventional solid state reaction method. Magnetization and spin state of cobalt of sample were systematically investigated. The experimental result suggests that magnetization and the Curie temperature increase sharply with increasing Sr content. The Curie-Weiss fit shows that most of the Co3+ ions are in the intermediate spin state and the Co4+ ions are in low spin for x=0.5. Furthermore, our study confirms that spin-state transition take place in Nd1-xSrxCoO3.

Magnetic and Magnetostrictive Properties of Tb-Dy-Ho-Fe-Co Alloys

2009 ◽  
Vol 152-153 ◽  
pp. 7-10 ◽  
Author(s):  
Irina S. Tereshina ◽  
S.A. Nikitin ◽  
G.A. Politova ◽  
A.S. Ilyushin ◽  
A.A. Opolenko ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Rare Earth ◽  
Applied Magnetic Field ◽  
Single Phase ◽  
X Ray Diffraction ◽  
Standard Strain ◽  
X Ray ◽  
Structural And Magnetic Properties ◽  
Co Alloys

In this work, the structural and magnetic properties of single-phase TbxDyyHoz(Fe,Co)2 (x + y + z = 1) alloys have been investigated by means of X-ray diffraction, 57Fe Mossbauer spectroscopy, magnetization measurements and a standard strain gage technique. The magnetostriction of TbxDyyHoz(Fe,Co)2 was examined against an applied magnetic field up to 10 kOe in 80 - 400 K temperature range. The Co-containing compounds are found to have high values of magnetostrictive susceptibility due to compensation of magnetic anisotropy in both the rare-earth and 3d transition metals sublattices.

scholarly journals Study of the Structural, Magnetic and Transport properties of La3+ Doped Cu-Zn Ferrite

2020 ◽  
Vol 12 (3) ◽  
pp. 259-267
Author(s):  
K. Nahar ◽  
M. A. Hossain ◽  
P. Roy ◽  
M. N. I. Khan ◽  
S. S. Sikder
Keyword(s):  
Solid State ◽  
Diffraction Pattern ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
X Ray Diffraction ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
X Ray ◽  
Zn Ferrite ◽  
La Doped

Crystalline La doped Cu-Zn ferrite with compositions Cu0.15Zn0.85LaxFe2-xO4 [ x = 0.00, 0.02, 0.04, 0.06 and 0.08] were synthesized by using conventional solid state reaction method technique. X-ray diffraction pattern (XRD), Crystalline La doped Cu-Zn ferrite with compositions Cu0.15Zn0.85LaxFe2-xO4 [x = 0.00, 0.02, 0.04, 0.06 and 0.08] were synthesized by using conventional solid state reaction method technique. X-ray diffraction pattern (XRD), scanning electron micrographs (SEM), hysteresis loop (M-H) curves and frequency dependent resistivity were employed to inspect the effect of La3+ doping on the structure, microstructure, magnetic and transport properties of the specimens. All the specimens exhibited fcc type cubic spinel structure where the particle size were within 500-1600 nm range. Magnetically ferromagnetic phenomenon was found for all the samples where the effect of La3+ doping consequence on the variation of various parameters like saturation magnetization (Ms), coercivity (Hc) and remanent magnetization (Mr). The resistivity tuned by frequency for all the samples presented the decreasing phenomenon with the increase of applied frequency.

MAGNETIC PROPERTIES OF SUPERCONDUCTING nMBa2Cu3Ox:Ag (M = Y, Gd, and Eu) COMPOSITES

1989 ◽  
Vol 03 (16) ◽  
pp. 1251-1265
Author(s):  
C. Y. HUANG ◽  
T. J. LI ◽  
Y. D. YAO ◽  
L. GAO ◽  
Z. J. HUANG ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
High Temperature ◽  
High Temperature Superconductors ◽  
Hysteresis Loops ◽  
Residual Magnetization ◽  
Rare Earth Ions ◽  
Pinning Force ◽  
Processing Conditions ◽  
The Rare Earth

We measured the M-H hysteresis loops of n YBa 2 Cu 3 O x: Ag (n = 3, 5, and 7) and 3RBa 2 Cu 3 O x: Ag (R = Gd and Eu) as a function of temperature, and found that the residual magnetization and, hence, pinning is independent of n and the rare-earth ions (R and Y), but depends greatly on the processing conditions. These samples exhibit the strongest pinning force for high-temperature superconductors developed to date.

scholarly journals Effect of Co and Y modification on structural, ferroelectric and magnetic properties of Bi5Ti3FeO15 ceramics

2021 ◽  
Author(s):  
Jelena D Bobic ◽  
Nikola Ilić ◽  
Vignaswaran Veerapandiyan ◽  
Mirjana Vijatović Petrović ◽  
Marco Deluca ◽  
...  
Keyword(s):  
Grain Size ◽  
Magnetic Properties ◽  
Magnetic Measurements ◽  
Hysteresis Loops ◽  
Partial Substitution ◽  
X Ray Diffraction ◽  
Conventional Solid State Reaction ◽  
Spectral Signatures ◽  
Chemically Modified ◽  
Raman Spectral

Abstract The ferroelectric and magnetic properties of four-layered Aurivillius Bi5Ti3FeO15 (BFT) compounds via partial substitution of Bi3+ with Y3+ and Fe3+ with Co2+ (according to formula: Bi5 − xYxTi3FeO15, x = 0.1, 0.2, 0.3; Bi5Ti3Fe1 − yCoyO15, y = 0.1, 0.3, 0.5) were investigated. Polycrystalline ceramics of Co and Y substituted BFT were prepared by conventional solid-state reaction. Crystal structure and phase purity were confirmed via X-ray diffraction. Raman spectral signatures indicate that Y replaces Bi ions in the pseudo-perovskite layers and Co replaces Fe ions in the octahedral sites. SEM micrographs show a decrease in grain size for both chemically modified samples when compared to plate-like morphology for pure BFT with dimensions ranging from 3–5 µm in length and a thickness of ~ 0.5 µm. The decrease in grain size is more pronounced in Co substituted samples with plate-like grain dimensions of 1 µm in length and 0.1 µm in thickness. Ferroelectric measurements show unsaturated leaky hysteresis loops in both chemically modified samples until the maximum applied electric field. Magnetic measurements confirm the paramagnetic nature of pure and Y substituted BFT ceramics while Co substituted BFT ceramics exhibit a typical ferromagnetic M-H loop. The largest remanent magnetization value of 0.084 emu/g at room temperature is recorded for the Co2+ substituted sample with x = 0.30.

Sign in / Sign up

Export Citation Format

Share Document