135 citations · 490 across the 23 of their papers we have counts for
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NMR study of Ni50+xTi50-x Strain-Glass
Rui Li, Jacob Santiago, Daniel Salas +2
We studied Ni50+xTi50-x with compositions up to x = 2, performing 47Ti and 49Ti nuclear magnetic resonance (NMR) measurements from 4 K to 400 K. For large x in this system, a strai…
Half-Heusler thermoelectric materials: NMR studies
Yefan Tian, Nader Ghassemi, Wuyang Ren +6
We report Co, Nb, and Sb nuclear magnetic resonance (NMR) measurements combined with density functional theory (DFT) calculations on a series of half-Heusler…
Accelerated design of Fe-based soft magnetic materials using machine learning and stochastic optimization
Yuhao Wang, Yefan Tian, Tanner Kirk +5
Machine learning was utilized to efficiently boost the development of soft magnetic materials. The design process includes building a database composed of published experimental re…
Defect charging and resonant levels in half-Heusler NbTiFeSb
Yefan Tian, Farit G. Vagizov, Nader Ghassemi +5
We report Nb and Sb NMR and Fe Mössbauer studies combined with DFT calculations of NbTiFeSb (), one of the most promisi…
Copper ion dynamics and phase segregation in Cu-rich tetrahedrite: an NMR study
Nader Ghassemi, Yefan Tian, Xu Lu +3
Cu NMR measurements are reported for the Cu-rich phase of \ch{Cu_{12+x}Sb4S13} () and compared to \ch{Cu12Sb4S13}. We identify the NMR signatures of the phase…
Charge-carrier behavior in Ba-, Sr- and Yb-filled CoSb: NMR and transport studies
Yefan Tian, Ali A. Sirusi, Sedat Ballikaya +3
We report Co NMR and transport measurements on -type filled skutterudites BaYbCoSb and CoSb (= Ba, Sr), promising thermoelectric m…
Dirac electron behavior and NMR evidence for topological band inversion in ZrTe5
Yefan Tian, Nader Ghassemi, Joseph H. Ross
We report Te NMR measurements of the topological quantum material ZrTe. Spin-lattice relaxation results, well-explained by a theoretical model of Dirac electron systems…
Relative Cooling Power Enhancement by Tuning Magneto-structural Stability in Ni-Mn-In Heusler Alloys
Jing-Han Chen, Nickolaus M. Bruno, Zhenhua Ning +5
Off-stoichiometric NiMnIn Heusler alloys have drawn recent attention due to their large magnetocaloric entropy change associated with the first-order magneto-structural transit…
Unconventional Large Linear Magnetoresistance in CuTe
Ali A. Sirusi, Alexander Page, Lucia Steinke +3
We report a large linear magnetoresistance in CuTe, reaching = 250\% at 2 K in a 9 T field. This is observed for samples with in the range 0.13 to 0.22, and t…
Dilute magnetism and vibrational entropy in Fe2Al5
Ji Chi, Xiang Zheng, Sergio Y. Rodriguez +5
Fe2Al5 contains a Fe-Al matrix through which are threaded disordered one-dimensional chains of overlapping Al sites. We report magnetic, nuclear-magnetic-resonance (NMR), and speci…
NMR experiments and electronic structure calculations in type-I BaAlGe clathrates
Weiping Gou, Sergio Y. Rodriguez, Yang Li +1
We describe 27Al NMR experiments on Ba8AlxGe46-x type-I clathrates coupled with ab initio computational studies. For x=16, calculated spectra determined by the ab initio results ga…
NMR relaxation and rattling phonons in type-I Ba8Ga16Sn30 clathrate
Xiang Zheng, Sergio Y. Rodriguez, Joseph H. Ross
Atomic motion of guest atoms inside semiconducting clathrate cages is considered as an important source for the glasslike thermal behavior.69Ga and 71Ga Nuclear Magnetic Resonance…
Transport and thermodynamic properties under anharmonic motion in type-I Ba8Ga16Sn30 clathrate
Xiang Zheng, Sergio Y. Rodriguez, Laziz Saribaev +1
Anharmonic guest atom oscillation has direct connection to the thermal transport and thermo- electric behavior of type-I Ba8Ga16Sn30 clathrates. This behavior can be observed throu…
Calorimetric and magnetic study for NiMnIn and relative cooling power in paramagnetic inverse magnetocaloric systems
Jing-Han Chen, Nickolaus M. Bruno, Ibrahim Karaman +3
The non-stoichiometric Heusler alloy NiMnIn undergoes a martensitic phase transformation in the vicinity of 345 K, with the high temperature austenite phase ex…
Direct Measure of Giant Magnetocaloric Entropy Contributions in Ni-Mn-In
Jing-Han Chen, Nickolaus M. Bruno, Ibrahim Karaman +3
Off-stoichiometric alloys based on Ni 2 MnIn have drawn attention due to the coupled first order magnetic and structural transformations, and the large magnetocaloric entropy assoc…
Coupled atomic motion and spin-glass transition in FeAl2
Yang Li, F. G. Vagizov, V. Goruganti +5
We have used 57Fe Mossbauer spectroscopy and x-ray diffraction to study the magnetic and vibrational properties of FeAl2. FeAl2 is an ordered intermetallic with a large Fe local mo…
Ferromagnetism in Fe-doped Ba6Ge25 Chiral Clathrate
Yang Li, Joseph H. Ross
We have successfully synthesized a Ba6Ge25 clathrate, substituting 3 Fe per formula unit by Ge. This chiral clathrate has Ge sites forming a framework of closed cages and helical t…
Ferromagnetism and Metamagnetism in Copper-doped Germanium Clathrate
Yang Li, Weiping Gou, Ji Chi +1
Cu-doped type-I germanium clathrate can exhibit dilute magnetism, including ferromagnetism, antiferromagnetism, and metamagnetic transitions up to 90 K. 63Cu NMR measurements confi…
NMR and Mossbauer study of spin dynamics and electronic structure of Fe{2+x}V{1-x}Al and Fe2VGa
C. S. Lue, Yang Li, Joseph H. Ross +1
In order to assess the magnetic ordering process in Fe2VAl and the related material Fe2VGa, we have carried out nuclear magnetic resonance (NMR) and Mossbauer studies. 27Al NMR rel…
Structure and stability of Ba-Cu-Ge type-I clathrates
Yang Li, Ji Chi, Weiping Gou +2
We have prepared samples of nominal type Ba(8)Cu(x)Ge(46-x) by induction melting and solid state reaction. Analysis shows that these materials form type-I clathrates, with copper c…