Browsing by Author "Ross, Joseph H. Jr."

Now showing items 1-20 of 40

    • Band-edge properties of a semiconductor alloy: An NMR study of Hg1−xCdxTe 
      Shi, Jianhui; Wessels, Mark; Ross, Joseph H. Jr. (American Physical Society, 1993)
      We report Hg199 NMR measurements of narrow-gap Hg1−xCdxTe alloys in the range x=0.20–0.28. By studying temperature dependences, we have identified intrinsic Knight shifts in these alloys. This provides a measure of Hg ...
    • Calorimetric and magnetic study for Ni50Mn36In14 and relative cooling power in paramagnetic inverse magnetocaloric systems 
      Chen, Jing-Han; Bruno, Nickolaus M.; Karaman, Ibrahim; Huang, Yujin; Li, Jianguo; Ross, Joseph H. Jr. (Journal of Applied Physics, 2014)
      The non-stoichiometric Heusler alloy Ni 50Mn36In14 undergoes a martensitic phase transformation in the vicinity of 345 K, with the high temperature austenite phase exhibiting paramagnetic rather than ferromagnetic behavior, ...
    • Charge-carrier behavior in Ba-, Sr- and Yb-filled CoSb3: NMR and transport studies 
      Tian, Yefan; Sirusi, Ali A.; Ballikaya, Sedat; Ghassemi, Nader; Uher, Ctirad; Ross, Joseph H. Jr. (2019)
      We report 59Co NMR and transport measurements on n-type filled skutterudites BaxYbyCo4Sb12 and AxCo4Sb12 (A=Ba or Sr), promising thermoelectric materials. The results demonstrate consistently that a shallow defect level ...
    • Dilute magnetism and vibrational entropy in Fe2Al5 
      Chi, Ji; Zheng, Xiang; Rodriguez, Sergio Y.; Li, Yang; Gou, Weiping; Rathnayaka, K. D. D.; Ross, Joseph H. Jr. (American Physical Society, 2010)
      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 specific-heat measurements addressing its ...
    • Dirac electron behavior and NMR evidence for topological band inversion in ZrTe5 
      Tian, Yefan; Ghassemi, Nader; Ross, Joseph H. Jr. (2019)
      We report 125Te NMR measurements of the topological quantum material ZrTe5. Spin-lattice relaxation results, well explained by a theoretical model of Dirac electron systems, reveal that the topological characteristic of ...
    • Direct Measure of Giant Magnetocaloric Entropy Contributions in Ni-Mn-In 
      Chen, Jing-Han; Bruno, Nickolaus M.; Karaman, Ibrahim; Li, Jianguo; Ross, Joseph H. Jr. (Elsevier, 2016)
      Off-stoichiometric alloys based on Ni2MnIn have drawn attention due to the coupled first order magnetic and structural transformations, and the large magnetocaloric entropy associated with the transformations. Here we ...
    • Effect of exchange bias on the electrical resistivity of Pd doped NiMn thin films: Two-Channel Kondo system 
      Oner, Y.; Kamer, O.; Ross, Joseph H. Jr. (AIP Publishing, 2006)
      Electrical resistivity measurements have been carried out for both flash-evaporated reentrant spin glasses (RSGs) (Ni76−xPdx)Mn24 and Ni74.5Mn23.5Pd2, as well as Ni75Mn23Pd2, a pure SG. These measurements were carried out ...
    • Gap-opening transition in Dirac semimetal ZrTe5 
      Tian, Yefan; Ghassemi, Nader; Ross, Joseph H. Jr. (2021)
      We apply 125Te nuclear magnetic resonance (NMR) spectroscopy to investigate the Dirac semimetal ZrTe5. With the NMR magnetic field parallel to the b axis, we observe significant quantum magnetic effects. These include an ...
    • High-field magneto-thermo-mechanical testing system for characterizing multiferroic bulk alloys 
      Bruno, Nickolaus M.; Karaman, Ibrahim; Ross, Joseph H. Jr.; Chumlyakov, Yuriy I. (AIP Publishing, 2015)
      Multiferroic meta-magnetic shape memoryalloys are well known for exhibiting large magnetic field induced actuation strains, giant magnetocaloric effects, magneto-resistance, and structural and magnetic glassy behaviors. ...
    • High-k Based Metal Oxide Device with Light Emitting Applications 
      Lin, Wen-Shan (2020-11-30)
      The electrical and optical characteristics of the ZrHfO, WOx, WOx embedded ZrHfO solid state incandescent light emission devices (SSI-LED) have been explored. SSI-LED is made from the high-k MOS capacitor after the dielectric ...
    • Laser-assisted scanning probe alloying nanolithography (LASPAN) and its application in gold-silicon system 
      Peng, Luohan (2009-05-15)
      Nanoscale science and technology demand novel approaches and new knowledge to further advance. Nanoscale fabrication has been widely employed in both modern science and engineering. Micro/nano lithography is the most common ...
    • Magnetic and electrical properties of NdNiSn 
      Oner, Y.; Kamer, O.; Ross, Joseph H. Jr. (Elsevier, 2008)
      Magnetization and resistivity measurements have been carried out on the equiatomic ternary compound NdNiSn in the temperature range 2–200 K. The compound crystallizes in the orthorhombic CeNiSn-type structure with space ...
    • Magnetic and Thermodynamic Properties of Nd2Ni2Pb 
      Goruganti, V.; Li, Yang; Ross, Joseph H. Jr.; Rathnayaka, K. D. D.; Oner, Y. (AIP Publishing, 2006)
      We report magnetic and thermodynamic measurements for Nd2Ni2Pb, one of the recently discovered R2Ni2Pb family of layered intermetallics. A specific heat jump at 19 K corresponds to an antiferromagnetic transition involving ...
    • Magnetic entropy change of the layered perovskites La2-2xSr1+2xMn2O7 
      Wang, Aihua; Cao, Guohui; Liu, Yang; Long, Yi; Li, Yang; Feng, Zhaosheng; Ross, Joseph H. Jr. (AIP Publishing, 2005)
      Magnetocaloric properties of perovskite-type manganese oxides with double Mn-O layers of composition La2−2xSr1+2xMn2O7 (x=0.33 and 0.4) have been investigated. A broad peak of magnetic entropy change (−ΔSM) was observed ...
    • Magnetic-field effects in NbSe3 
      Shi, Jianhui; Chepin, James; Ross, Joseph H. Jr. (American Physical Society, 1992)
      We have performed NMR studies on an aligned, multicrystalline NbSe3 sample at various temperatures. We find conclusive evidence of field-induced Fermi-surface changes at low temperatures, and associate these changes with ...
    • NMR and Computational Study of Ba8CuxGe46-x clathrate semiconductors 
      Chen, Jing-Han; Sirusi Arvij, Ali; Zheng, Xiang; Rodriguez, Sergio Y.; Ross, Joseph H. Jr. (Elsevier, 2014)
      Ba8CuxGe46-x is a type-I clathrate material that forms as a semiconductor in a narrow composition range corresponding to the electron-balanced Zintl composition, with x = 5.3. We use NMR spectroscopy combined with ab initio ...
    • NMR and Mössbauer study of FeAl2 
      Chi, Ji; Li, Yang; Vagizov, F. G.; Goruganti, V.; Ross, Joseph H. Jr. (American Physical Society, 2005)
      We have used NMR and Mössbauer spectroscopy to investigate the magnetism and spin-glass behavior in FeAl2. The results show that the observed behavior can be interpreted as local-moment magnetism residing on the Fe sites. ...
    • NMR and Mössbauer study of spin dynamics and electronic structure of Fe2+xV1-xAl and Fe2VGa 
      Lue, C. S.; Li, Yang; Ross, Joseph H. Jr.; Irwin, George M. (American Physical Society, 2003)
      In order to assess the magnetic ordering process in Fe2VAl and the related material Fe2VGa, we have carried out nuclear magnetic resonance (NMR) and Mössbauer studies. 27Al NMR relaxation measurements covered the temperature ...
    • NMR determination of Van Hove singularity and Lifshitz transitions in the nodal-line semimetal ZrSiTe 
      Tian, Yefan; Zhu, Yanglin; Li, Rui; Mao, Zhiqiang; Ross, Joseph H. Jr. (2021)
      We have applied nuclear magnetic resonance spectroscopy to study the distinctive network of nodal lines in the Dirac semimetal ZrSiTe. The low-T behavior is dominated by a symmetry-protected nodal line, with NMR providing ...
    • NMR experiments and electronic structure calculations in Type-I BaAlGe clathrates 
      Gou, Weiping; Rodriguez, Sergio Y.; Li, Yang; Ross, Joseph H. Jr. (American Physical Society, 2009)
      We describe A27l 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 gave good agreement with the measurements, ...