Pressure effects on magnetic properties of R(Fe,M)12 single crystals (R=rare earth, M=Ti,Mo)

Kamarád, J.; García‐Landa, B.; Mikulina, O.; Arnold, Z.; Ibarra, M. R.; Algarabel, P. A.

doi:10.1016/s0304-8853(00)00968-9

Cited by 12 publications

(9 citation statements)

References 9 publications

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“…It has been observed that the existence of the Invar effect is related to a strong dependence of T C and the magnetization with the interatomic distances in the lattice [11]. Therefore, it is interesting to compare our results with the reported pressure experiments on YFe 11 Ti, where a variation of the Fe magnetic moment with pressure was found, given by dm Fe =dp¼ À3:4 Â 10 À3 kbar [12]. This is a confirmation of the tight relation between magnetic and lattice effects in these compounds.…”

Section: Resultssupporting

confidence: 55%

“…Among these systems, ThMn 12 type rare-earth transition-metal compounds have attracted much more attention due to their excellent magnetic properties and simple crystal structure (only one rare-earth site, 2a, and three transition-metal sites, 8i, 8j and 8f). The correlation between the magnetic properties and the lattice in the rare-earth-3d intermetallics has been the subject of many experimental and theoretical investigations [2].…”

Section: Introductionmentioning

confidence: 99%

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Magnetovolume effect in ThMn12-type Fe-rich R(Fe,Nb)12-based compounds

Wang

Marquina

García‐Landa

et al. 2002

Physica B: Condensed Matter

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We have measured the thermal expansion of several Fe-rich compounds with the ThMn 12 structure. The series RFe 11.3 Nb 0.7 (R=Y, Sm, Gd, Tb, Dy, Ho and Er), Ho(Fe 1Àx Ni x ) 11.3 Nb 0.7 with x ¼ 020:3; YFe 11 Ti and YFe 10 Mo 2 have been investigated in the temperature range 150-800 K. In the Fe-rich compounds with stabilizing element T=Nb and Ti, a pronounced positive spontaneous volume magnetostriction has been observed below the Curie temperature. The effect of Ni substitution for Fe on the volume effect and on the Curie temperature has been analyzed studying the Ho(Fe 1Àx Ni x ) 11.3 Nb 0.7 compounds. The different magnitude of the magnetovolume effect observed in YFe 11.3 Nb 0.7 , YFe 11 Ti and YFe 10 Mo 2 is explained in terms of the classical model for itinerant ferromagnets. r

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Section: Resultssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Magnetovolume effect in ThMn12-type Fe-rich R(Fe,Nb)12-based compounds

Wang

Marquina

García‐Landa

et al. 2002

Physica B: Condensed Matter

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“…From the table, we can see that in both Nd 0.5 Dy 0.5 Fe 10.2 TiMo 0.8 and Nd 0.5 Dy 0.5 -Fe 10.6 TiSi 0.4 , the average bond lengths were all longer than 2.45 Å, so the Curie temperature of the two compounds Figure 8, gave values of the Curie temperature of 573 K, 552 K, 454 K and 378 K, respectively, showing that substitution of Fe by Mo or Si, actually always led to a decrease in the Curie tempera- ture. This phenomenon has also been reported by other workers: for example, the Curie temperature of YFe 11 Ti is 535 K [30] , while the Curie temperature of YFe 10 TiSi is 495 K [31] , showing that the effects of varying the composition of the material on their Curie temperature is complicated. …”

Section: Resultssupporting

confidence: 85%

Effects of combined substitution of Dy and Mo or Si on the crystal structures and magnetic properties of Nd1−y Dy y Fe11−x TiM x (M = Mo, Si) compounds

Zheng

et al. 2009

Sci. China Ser. B-Chem.

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A series of Nd 1−y Dy y Fe 11−x TiM x (M = Mo, Si) alloys have been prepared by arc melting and studied by X-ray diffraction and neutron diffraction. All samples are found to crystallize in the ThMn 12 -type structure. The lattice parameters a and c and unit cell volume V of Nd 0.5 Dy 0.5 Fe 11−x TiMo x alloys increase linearly with increasing content of Mo (x), while the lattice parameters a and c and unit cell volume V of Nd 0.5 Dy 0.5 Fe 11−x TiSi x alloys decrease linearly with increasing content of Si(x). In Nd y Dy 1−y Fe 11−x TiM x (M = Mo, Si) compounds, Ti and Mo atoms preferentially occupy the 8i sites and Si atoms preferentially occupy the 8j and 8f sites. Magnetic measurements show that the substitution of Fe by either Mo or Si leads to a decrease in the Curie temperature.rare earth-transition metal compounds, crystal structure, X-ray diffraction, neutron diffraction

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“…A similar behaviour was also determined for the pressure effect on the magnetisation of these compounds which shows that dM/dP is equal to À 0.065 and À 0.056 (m B /f.u.) kbar À 1 for Y-and Ho-containing compounds, respectively [15]. Therefore, these results may indicate that Ho sublattice moment induces a negative effect on spontaneous volume magnetostriction.…”

Section: Resultsmentioning

confidence: 79%