Anomalous magnetotransport behavior in Fe-doped MnNiGe alloys

Spin-valve-like magnetoresistance in a Ni-Mn-In thin film

“…There is little variation in n. The value is close to those reported for the s-d scattering [32]. We further fit the MR data with ρ/ρ 0 = − γ H + βH 2 , and obtained β/γ ≈ 10 −6 , which again confirms that the behavior is almost linear in the high-field region and mostly dominated by the s-d scattering [12,29,33,34].…”

Martensitic transition assisted modification of the antiferromagnetic ordering in Ge-site doped MnNiGe alloys

“…As is evident from previous studies, transition temperatures in MnNiGe are highly sensitive to the compositional elements and their molar percentage [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Partial substitution of different sites of the parent compound with a suitable foreign element corresponds to a significant change in both structural and magnetic transition temperatures [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Interestingly, the alloy retains the AFM ordering after doping at the Mn/Ni site, as confirmed by the magnetic and neutron powder diffraction (NPD) analysis [9,10,[15][16][17][18][19][24][25][26][27][28].…”

“…Partial substitution of different sites of the parent compound with a suitable foreign element corresponds to a significant change in both structural and magnetic transition temperatures [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Interestingly, the alloy retains the AFM ordering after doping at the Mn/Ni site, as confirmed by the magnetic and neutron powder diffraction (NPD) analysis [9,10,[15][16][17][18][19][24][25][26][27][28]. On the other hand, the effect of doping at the Ge site is slightly different than Mn/Nisite doping.…”

“…Among the various members of the magnetic equiatomic family (general formula MM X , where M and M are transition metals and X is a nonmagnetic sp element), MnNiGe is widely accepted as a promising candidate for practical applications as it possess multiple functional properties, including the shape memory effect, a large magnetocaloric effect, magnetoresistance, the exchange bias effect, etc. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. In addition, the undoped MnNiGe alloy undergoes multiple phase transformations (structural and magnetic depending on the thermal state of the material), namely, (i) MPT around 470 K from the high-temperature Ni 2 In-type hexagonal austenite phase (space group P6 3 /mmc) to the TiNiSi-type orthorhombic martensite phase (space group Pnma) and (ii) a paramagnetic (PM) to spiral antiferromagnetic (AFM) transition below or around 346 K [8][9][10]16,[24][25][26][27][28].…”

Neutrino Physics with Dark Matter Detectors

“…The MINER experiment has a configuration which makes it uniquely sensitive to sterile neutrinos; the projected reach of this experiment has been studied in Ref. (144). In particular, the MINER experiment, which utilizes detectors a few m from the reactor core, is complementary to the reach of LSND, Mini-Boone, and COHERENT in its constraint on the mass splitting ∆m 2 14 sin 2 2θ14.…”