Hill Plot Focusing on Ce Compounds with High Magnetic Ordering Temperatures and Consequent Study of Ce2AuP3

Miyahara, Junya; Shirakawa, Naoki; Setoguchi, Yuta; Tsubota, Masami; Kuroiwa, Kento; Kitagawa, Jiro

doi:10.1007/s10948-018-4624-9

Cited by 10 publications

(5 citation statements)

References 27 publications

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“…It is known that it can be tuned by doping, mainly due to the variation of the density of states near the Fermi level. The doping effect is reported in, for example, Ni 2 MnGa, SmCo 5-x Fe, MnBi, Nd 2 Fe 17 X (X = C or N), Ce 2 AuP 3 and so on [125][126][127][128][129]. Taking into account the crystal symmetry, which is related to the magnetic anisotropy energy, a lower crystal symmetry with more tunable crystal parameters might be favorable.…”

Section: Towards Further On-demand Control Of Magnetismmentioning

confidence: 99%

Interstitial Atom Engineering in Magnetic Materials

Kitagawa

Sakaguchi

Hara

et al. 2020

Metals

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Interstitial light elements play an important role in magnetic materials by improving the magnetic properties through changes of the unit cell volume or through orbital hybridization between the magnetic and interstitial atoms. In this review focusing on the effects of interstitial atoms in Mn-based compounds, which are not well researched, the studies of interstitial atoms in three kinds of magnetic materials (rare-earth Fe-, Mn-, and rare-earth-based compounds) are surveyed. The prominent features of Mn-based compounds are interstitial-atom-induced changes or additional formation of magnetism—either a change from antiferromagnetism (paramagnetism) to ferromagnetism or an additional formation of ferromagnetism. It is noted that in some cases, ferromagnetic coupling can be abruptly caused by a small number of interstitial atoms, which has been overlooked in previous research on rare-earth Fe-based compounds. We also present candidates of Mn compounds, which enable changes of the magnetic state. The Mn-based compounds are particularly important for the easy fabrication of highly functional magnetic devices, as they allow on-demand control of magnetism without causing a large lattice mismatch, among other advantages.

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Section: Towards Further On-demand Control Of Magnetismmentioning

confidence: 99%

Interstitial Atom Engineering in Magnetic Materials

Kitagawa

Sakaguchi

Hara

et al. 2020

Metals

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“…The temperature dependence of dc magnetic susceptibility χ dc (T ) between 2 K and 300 K and the magnetization curve were measured by a Quantum Design MPMS. The Curie temperature T C and the Néel temperature T N were determined by the minimum of temperature derivative of χ dc (T ) [20,21,22,23] and basically the peak position of χ dc (T ), respectively.…”

Section: Polycrystalline Samples With Different Atomic Compositions O...mentioning

confidence: 99%

Competition between ferromagnetic and antiferromagnetic states in Al8.5−Fe23Ge12.5+ (0≤x≤3)

Kitagawa

Yakabe

Nakayama

et al. 2020

Journal of Solid State Chemistry

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Polycrystalline Al 7+x Fe 23 Ge 14−x -type orthorhombic Al 8.5−x Fe 23 Ge 12.5+x (0≤x≤3) compounds were studied by X-ray diffraction measurement, metallographic examination, and magnetization and electrical resistivity measurements. The lattice parameters show anisotropic x dependences, reflecting a lower symmetry of rather complex crystal structure. In the x=0 sample, a ferromagnetic (FM) transition occurs at the Curie temperature T C of 255 K, which is systematically reduced with increasing x and disappears at x=2.5 where an

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“…The T C of each ferromagnet was determined as a minimum on the temperature derivative of χ dc ( T ) (see the inset of Figure 4 a or Figure 4 c). This procedure is frequently employed in ferromagnets [ 25 , 26 , 27 ]. The χ dc ( T )s of FePd 4 and FePt 4 also show Curie–Weiss behaviors above their T C s (red lines in Figure 4 b,d).…”

Section: Resultsmentioning

confidence: 99%

Magnetic and Transport Properties of New Dual-Phase High-Entropy Alloy FeRhIrPdPt

et al. 2021

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High-entropy alloys (HEAs) are broadly explored from the perspective of mechanical, corrosion-resistance, catalytic, structural, superconducting, magnetic properties, and so on. In magnetic HEAs, 3d transition metals or rare-earth elements are well-studied compositional elements. We researched a magnetic HEA containing Fe combined with 4d and 5d transition metals, which has not been well investigated, and found a new dual-phase face-centered-cubic (fcc) HEA FeRhIrPdPt. The structural, magnetic, and transport properties were evaluated by assuming that FeRhIrPdPt is a mixture of FeRh4, FeIr4, FePd4, and FePt4, all with the fcc structure. The dual-phase is composed of a Rh- and Ir-rich main phase and a Pd- and Pt-rich minor one. FeRh4 and FeIr4 show spin freezings at low temperatures, while FePd4 and FePt4 are ferromagnetic. Two magnetic features can characterize FeRhIrPdPt. One is the canonical spin-glass transition at 90 K, and the other is a ferromagnetic correlation that appears below 300 K. The main and minor phases were responsible for the spin-glass transition and the ferromagnetic correlation below 300 K, respectively.

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Hill Plot Focusing on Ce Compounds with High Magnetic Ordering Temperatures and Consequent Study of Ce2AuP3

Cited by 10 publications

References 27 publications

Interstitial Atom Engineering in Magnetic Materials

Interstitial Atom Engineering in Magnetic Materials

Competition between ferromagnetic and antiferromagnetic states in Al8.5−Fe23Ge12.5+ (0≤x≤3)

Magnetic and Transport Properties of New Dual-Phase High-Entropy Alloy FeRhIrPdPt

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