Magnetic and electrical properties of the half-Heusler CuxNi1−xMnSb alloys

Ren, Shi‐Bin; Wang, Y.X.; Zhang, Y.J.; Ji, G.B.; Zhang, F.M.; Du, Youwei

doi:10.1016/j.jallcom.2004.06.063

Cited by 15 publications

(6 citation statements)

References 15 publications

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“…1 The calculated concentration dependence of magnetic moments is shown in Fig. 2 together with the experimental data [7,8]. Overall good agreement between theoretical and experimental averaged moments is found over the whole concentration range.…”

Section: Electronic and Magnetic Propertiessupporting

confidence: 53%

“…We also show the averaged moment for the ferromagnetic state and x Cu > 0.7 (open circles). The thick dashed line denotes the experiment [7]. Note that Mn − moments are taken with the opposite sign.…”

Section: Exchange Interactions and Curie Temperaturesmentioning

confidence: 99%

“…We mention a recent comprehensive theoretical study of electronic properties of CuMnSb [6]. Extensive experimental studies of various properties of (Cu,Ni)MnSb quaternary alloys including measurements of magnetic properties and Curie temperatures were done recently [7,8]. The main conclusion from experimental studies is a dramatic concentration dependence of magnetization with a pronounced break at about 70% of Cu-content as contrasted with a smooth concentration behavior F o r P e e r R e v i e w O n l y observed for Curie temperatures.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electronic and magnetic properties of quaternary (Cu, Ni)MnSb alloys

Kudrnovský¹,

Drchal²,

Máca³

et al. 2008

Philosophical Magazine

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Section: Electronic and Magnetic Propertiessupporting

confidence: 53%

Section: Exchange Interactions and Curie Temperaturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electronic and magnetic properties of quaternary (Cu, Ni)MnSb alloys

Kudrnovský¹,

Drchal²,

Máca³

et al. 2008

Philosophical Magazine

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“…Substitution of Cu by Ni (Pt) leads to a linear decrease (increase) of the lattice constant whereby strong ferromagnetism is established for very small doping concentrations. [14][15][16] Also, detailed first-principle calculations on Co/Ni-doped CuMnSb and CuMnZ (Z = In, Sn, Sb, Te) reveal that the magnetic exchange interactions in these compounds can be described in terms of competition between the ferromagnetic Ruderman-Kittel-Kasuya-Yosida (RKKY)-type exchange and antiferromagnetic superexchange, depending on the relative positions of the unoccupied minority Mn 3d states and the Fermi level. [17][18][19] It would be interesting to study how pressure can tune these parameters in a relatively welldefined manner and thereby influence the unusual AFM state in CuMnSb.…”

Section: Introductionmentioning

confidence: 99%

High-pressure investigations on the semi-Heusler compound CuMnSb

Malavi

Song

et al. 2018

Phys. Rev. B

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The antiferromagnetic semi-Heusler compound CuMnSb has been investigated under high pressure by electrical resistivity and angle dispersive synchrotron x-ray diffraction measurements to 53 and 36 GPa, respectively. The Néel temperature at ∼50 K is found to initially increase rapidly with pressure, reaching 83 K at 7 GPa. However, near 8 GPa at ambient temperature a sluggish first-order structural transition begins from a semi-metallic cubic phase to a likely semi-metallic tetragonal phase; thermal cycling to 355 o C at 9.6 GPa serves to complete the transition. In the tetragonal phase no sign of magnetic ordering is visible in the resistivity R(T) over the measured temperature range 4 K-295 K. This suggests that magnetic ordering may have shifted to temperatures well above ambient. Indeed, density functional calculations find the magnetic ground state in the tetragonal phase to be antiferromagnetic. Following decompression to 1 bar at ambient temperature, the high-pressure tetragonal phase is retained.

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“…On the other hand, though the semi-Heusler alloy CuMnSb has the same crystal structure as that of NiMnSb, it is antiferromagnetic with a Néel temperature (T N ) of 55 K and the exchange interaction is of superexchange type [8]. It has been observed that there is a transition from AFM to FM phase in Cu 1-x Ni x MnSb with increase in Ni concentration [9][10][11]. This transition occurs due to the change in electron concentration (i.e.…”

Section: Introductionmentioning

confidence: 99%

Revealing the nature of magnetic phases in the semi-Heusler alloy Cu0.85Ni0.15MnSb

Halder

Суреш

Mukadam

et al. 2015

Journal of Magnetism and Magnetic Materials

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We report the magnetic, magnetocaloric, and magnetotransport properties of the semiHeusler alloy Cu 0.85 Ni 0.15 MnSb, which exhibits coexistence of antiferromagnetic (AFM) and ferromagnetic (FM) phases. A broad magnetic phase transition is evident from the temperature variations of magnetization, heat capacity, and isothermal magnetic entropy change. This is due to the presence of both AFM and FM phases at low temperatures. The variation of electrical resistivity with temperature shows three distinct regions of magnetic phases. The magnetoresistance (MR) results also show the presence of AFM and FM phases at temperatures below 45 K, and a FM phase at temperature above 45K. Though there is no signature of a spin-glass state at low temperatures, various results point towards the presence of short-range magnetic correlations at low temperatures.

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Magnetic and electrical properties of the half-Heusler CuxNi1−xMnSb alloys

Cited by 15 publications

References 15 publications

Electronic and magnetic properties of quaternary (Cu, Ni)MnSb alloys

Electronic and magnetic properties of quaternary (Cu, Ni)MnSb alloys

High-pressure investigations on the semi-Heusler compound CuMnSb

Revealing the nature of magnetic phases in the semi-Heusler alloy Cu0.85Ni0.15MnSb

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