Structural and magnetic properties of R3(Fe,T)29 compounds

Fuerst, C. D.; Pinkerton, F. E.; Herbst, J. F.

doi:10.1063/1.358334

Cited by 72 publications

(34 citation statements)

References 8 publications

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“…However, the increase of compressibility in magnetic ordered state of the Invar Fe65Ni35 alloy is very smooth without 7,-anomaly observed in the R-Fe intermetallics. Using phenomenological relation (1) where ws is spontaneous volume magnetostriction and Pc = (dln Tc / dp)-1 is a critical pressure for a disappearance of magnetic ordered state, the values of Kmcal were estimated with help of data in Table I and experimental values of ws(0) in [3] The magnetization of the single crystals Y2Fe17 and Er2Fe17 has been measured under pressure at magnetic fields up to 5T along easy direction of magnetization (a-axis in hexagonal crystal structure). We will concentrate attention on the pressure behaviour of the saturated magnetization Mo(T p) at zero magnetic field (further denoted only as M(T, p) ) which was linearly interpolated from Mr p(H) hysteresis curves measured in the easy magnetization direction at temperatures from 5K to 300K and under pressures up to 10 kbar , see Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The complex magnetic behaviour of the Fe-rich R-Fe intermetallics (with outstanding properties for permanent magnet applications) is a consequence of an interplay of the localized and itinerant character of magnetic moments on R and Fe atoms, respectively [1,2]. Generally, the ferromagnetic (parallel) arrangement of the magnetic R-and Fe-sublattices is observed for light R elements and ferrimagnetic (antiparallel) arrangement for heavy R elements.…”

Section: Introductionmentioning

confidence: 99%

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Magnetovolume Phenomena in Fe-rich R-Fe Intermetallics.

Kamarád

Arnold

Mikulina

et al. 1998

THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY

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Results of pressure measurements of thermal expansion, compressibility, magnetization and Curie temperature of rareearth and transition metals intermetallics are presented. A dependence of compressibility in ferro-(ferri-) magnetic state of the intermetallics on Tc, Kf Tc-1, has been discovered. The pronounced Invar-like behaviour of these materials is described and discussed within thermodynamic relations and itinerant d-electron concepts.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetovolume Phenomena in Fe-rich R-Fe Intermetallics.

Kamarád

Arnold

Mikulina

et al. 1998

THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY

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“…Since then, much attention has been paid to the R 3 (Fe,M) 29 compounds, where R stands for rare-earth and M for stabilizing element. A series of novel R 3 (Fe,M) 29 compounds and their interstitial compounds have been synthesized for R = Sm, Ce, Pr, Nd, Y, Gd, Tb and M = Mo, Ti, Cr, Mn, V, etc [3][4][5][6][7][8]. Yang et al [9] and Hu et al [10] have synthesized Sm 3 (Fe,Ti) 29 N y and Sm 3 (Fe,Ti) 29 C y compounds, respectively, which exhibit outstanding intrinsic magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Structure and magnetic properties of (Nd_1 xEr_x)₃Fe₂₅Cr_4.0(0 x 0.8) compounds

Luo¹,

Lin²,

Li³

et al. 2004

J. Phys. D: Appl. Phys.

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The structure and magnetic properties of (Nd 1−x Er x ) 3 Fe 25 Cr 4.0 compounds with x = 0-0.8 have been investigated using x-ray powder diffraction (XRD) and magnetic measurements. It has been found that all the compounds crystallize in a Nd 3 (Fe,Ti) 29 -type structure. Substitution of Er for Nd leads to a contraction of the unit-cell volume. The Curie temperature, T c , and the saturation magnetization, M s , of (Nd 1−x Er x ) 3 Fe 25 Cr 4.0 decrease monotonically with increasing Er content. The easy magnetization direction (EMD) of Nd 3 Fe 25 Cr 4.0 at room temperature is close to the [040] direction but may be a little out of the basal plane. With increasing Er content, the EMD changes closer to the [40−2] direction and the tilt angle increases. Both the XRD patterns and ac susceptibility indicate the appearance of a spin reorientation for x = 0-0.4 as the temperature decreases from room temperature to 77 K. The spin reorientation temperature, T sr , increases monotonically with increasing Er content from 158 K for x = 0 to 198 K for x = 0.4. A first order magnetization process (FOMP) occurs for all the compounds, and the critical field of the FOMP decreases with increasing Er content from 6.6 T for x = 0 to 2.0 T for x = 0.7.

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“…Up to now, a series of R 3 (Fe,M) 29 compounds with Nd 3 (Fe,Ti) 29 -type structure have been synthesized for R = Nd, Ce, Pr, Sm, Gd, Tb, Dy and Y, and T = Ti, V, Cr, Mn, Mo, etc. [4][5][6][7][8][9][10]. It is well known that the Nd 3 (Fe,Ti) 29 -type structure is a mixture of the tetragonal ThMn 12 (1:12) and the rhombohedral Th 2 Zn 17 (2:17R) structures [3], the latter being formed by the presence of light rare earth.…”

Section: Introductionmentioning

confidence: 99%