Conical spin arrangement and spin reorientation process in Er2-xHoxFe14B observed with Mössbauer spectroscopy

Kurzydło, Piotr M.; Pȩdziwiatr, A.T.; Bogacz, B.F.; Przewoźnik, J.; Oleszak, D.

doi:10.1016/j.jallcom.2016.05.140

Cited by 3 publications

(13 citation statements)

References 17 publications

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“…Samples of Tm 2-x Ho x Fe 14 B (x = 0, 0.3, 1.0, 1.5, 2.0) compounds were prepared for further studies by alloying in an electric arc furnace and annealing at 900°C, similar to a previous experiment [10].…”

Section: Experimental Methodsmentioning

confidence: 99%

“…The utilized procedure allows us to determine the position angle of vector M  by minimizing the free energy function F(T) of two coupled sublattices -associated with R atoms and Fe atoms. The procedure was analogous to that used for Er 2-x Ho x Fe 14 B and its extended description can be found in [10]. The fi nal formula, presenting the dependence of the total free energy as a function of temperature T and angle , can be written in the following way: (1) where Z(i) is the partition function: (2)  is the angle between the magnetization direction and the plane that is perpendicular to the crystal c axis (Fig.…”

Section: Computer Simulations -Theoretical Modelmentioning

confidence: 99%

“…Also the obtained Mössbauer spectra compared with data from simulations confi rmed this similarity, and hence the suspicion of the existence of the conical spin arrangement in the studied series. It was a premise to use the same analysing procedure, developed and used for Er 2-x Ho x Fe 14 B compounds, where a conical spin arrangement was observed and described [10].…”

Section: Mössbauer Spectra Analysismentioning

confidence: 99%

“…1) of total magnetization of vector M  at a specifi c temperature [10]. This position can change from planar (within the a-b crystallographic plane, ( = 0˚)), via tilted (within the plane perpendicular to the a-b plane (0˚ <  < 90˚)), to fi nal axial (parallel to the crystallographic axis c ( = 90˚)) [10,15]. It is possible to describe the reorientation process in a featured way, where the total magnetization M  not only fl ips but also rotates from a planar to axial position.…”

Section: Mössbauer Spectra Analysismentioning

confidence: 99%

“…Subsequently, the compounds of interesting Tm and Spin reorientation process in Tm 2-x Ho x Fe 14 B -analysis of conical arrangement based on Mössbauer spectra Ho content were prepared and Mössbauer measurements were performed. It was also important to verify if the reorientation process can be described using similar methods as those utilized for the Er 2-x Ho x Fe 14 B series [10] (Er and Tm ions have similar values of  J [1]). …”

Section: Introductionmentioning

confidence: 99%

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Spin reorientation process in Tm_2–xHo_xFe₁₄B – analysis of conical arrangement based on Mössbauer spectra

et al. 2017

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Abstract. The spin reorientation process in the Tm 2-x Ho x Fe 14 B series of compounds was studied using 57 Fe Mössbauer spectroscopy over the temperature range 5.2-320 K with a focus on the analysis of conical spin arrangement. Each compound was studied by precise Mössbauer scanning in the vicinity of the transition and during the transition. By applying computer simulations based on the simplifi ed Yamada-Kato model, as well as on some literature data for R 2 Fe 14 B (R = Tm, Ho) compounds, the above series was selected for studies as it contains compounds with different spin arrangements (axial, planar, conical). It was a crucial requirement for obtaining unambiguous angular dependences when applying a simultaneous fi tting procedure of Mössbauer spectra. Such an extended procedure was applied which allowed the temperature dependence of the angle describing the position of the magnetization vector to be obtained. The results were compared with those from theoretical simulations. The spin arrangement diagram was constructed. A conical spin arrangement was confi rmed over a wide temperature range.

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Section: Experimental Methodsmentioning

confidence: 99%

Section: Computer Simulations -Theoretical Modelmentioning

confidence: 99%

Section: Mössbauer Spectra Analysismentioning

confidence: 99%

Section: Mössbauer Spectra Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spin reorientation process in Tm_2–xHo_xFe₁₄B – analysis of conical arrangement based on Mössbauer spectra

et al. 2017

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Magnetic Properties, Magnetocaloric and Magnetoresistance Effects in Gd₅In₃ and Tb₅In₃ Compounds

Mondal

Dutta

Chatterjee

et al. 2022

Physica Status Solidi (b)

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The present work reports a comprehensive investigation of the structural, magnetic, and transport behaviors of the rare‐earth indium‐based intermetallics Gd5In3 and Tb5In3. The high‐temperature paramagnetic‐to‐ferromagnetic transitions in both the compounds are found to be second order, obeying a mean‐field type critical behavior. The sample shows multiple low‐temperature anomalies and clear signatures of thermal hysteresis are observed in the magnetization versus temperature data in the vicinity of such transitions. Tb5In3 shows a moderate amount of magnetocaloric effect around its high‐temperature Curie point. Interestingly, Gd5In3 shows large negative magnetoresistance at low temperatures, which is comparable to many other bulk intermetallic compounds.

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From Flip to Slow Rotation-Spin Reorientation Process in Tm_2-xTb_xFe₁₄B Observed by Mössbauer Spectroscopy

et al. 2018

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The series of Tm2−xTbxFe14B compounds with tetragonal crystal structure was selected for studies as it contains a mix of competing rare-earth ions which are characterized by exactly opposite values of the Stevens coefficient, αJ , a parameter which corresponds, however indirectly, to macroscopic magnetic anisotropy of the whole compound in which this ion is built in. Thulium (αJ > 0) exhibits strong planar magnetic anisotropy while terbium (αJ < 0) exhibits strong axial magnetic anisotropy. Following earlier studies for Er-based compounds, a series of Tm-based compounds with x = 0, 0.1, 0.3 was synthesized as they were likely to show spin reorientation process, allowing to study a path of the transition, angle of conical arrangement, and an influence of αJ on the spin reorientation process. All compounds were studied with 57 Fe Mössbauer spectroscopy in the temperature range 80-330 K with precision scanning in the vicinity of the spin transition. Experimental data were processed using simultaneous fitting procedure which includes a flipping and rotation of spins during the reorientation process. A computer simulation of spin reorientation process based on the Yamada-Kato model was conducted. As a summary, a spin arrangement diagram was constructed.

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Conical spin arrangement and spin reorientation process in Er2-xHoxFe14B observed with Mössbauer spectroscopy

Cited by 3 publications

References 17 publications

Spin reorientation process in Tm_2–xHo_xFe₁₄B – analysis of conical arrangement based on Mössbauer spectra

Spin reorientation process in Tm_2–xHo_xFe₁₄B – analysis of conical arrangement based on Mössbauer spectra

Magnetic Properties, Magnetocaloric and Magnetoresistance Effects in Gd₅In₃ and Tb₅In₃ Compounds

From Flip to Slow Rotation-Spin Reorientation Process in Tm_2-xTb_xFe₁₄B Observed by Mössbauer Spectroscopy

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Conical spin arrangement and spin reorientation process in Er2-xHoxFe14B observed with Mössbauer spectroscopy

Cited by 3 publications

References 17 publications

Spin reorientation process in Tm2–xHoxFe14B – analysis of conical arrangement based on Mössbauer spectra

Spin reorientation process in Tm2–xHoxFe14B – analysis of conical arrangement based on Mössbauer spectra

Magnetic Properties, Magnetocaloric and Magnetoresistance Effects in Gd5In3 and Tb5In3 Compounds

From Flip to Slow Rotation-Spin Reorientation Process in Tm2-xTbxFe14B Observed by Mössbauer Spectroscopy

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Spin reorientation process in Tm_2–xHo_xFe₁₄B – analysis of conical arrangement based on Mössbauer spectra

Spin reorientation process in Tm_2–xHo_xFe₁₄B – analysis of conical arrangement based on Mössbauer spectra

Magnetic Properties, Magnetocaloric and Magnetoresistance Effects in Gd₅In₃ and Tb₅In₃ Compounds

From Flip to Slow Rotation-Spin Reorientation Process in Tm_2-xTb_xFe₁₄B Observed by Mössbauer Spectroscopy