Superconducting Properties of Selected Intermetallic Compounds.
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Miami University / OhioLINK
2019
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=miami1564773139403356 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-miami1564773139403356 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-miami15647731394033562021-08-03T07:12:14Z Superconducting Properties of Selected Intermetallic Compounds. Bhatt, Subhash Physics Superconductivity Heusler compounds The superconducting properties of a series of Ni<sub>2</sub>ZrAl<sub>1-x</sub>Ga<sub>x</sub>, Ni<sub>2</sub>ZrAl<sub>1-x</sub>B<sub>x</sub> and Ni<sub>2-x</sub>Cu<sub>x</sub>ZrGa Heusler compounds have been explored via x-ray diffraction, scanning electron microscopy, electrical resistivity, dc magnetization, and ac susceptibility measurements. In common, all samples exhibited the cubic L2<sub>1</sub>cubic structure at room temperature. For x ≥ 0.20, the Ni<sub>2</sub>ZrAl<sub>1-x</sub>B<sub>x</sub> compounds exhibited multiple phase, swerving away from the single cubic phase of the parent compound, Ni<sub>2</sub>ZrAl. All Ga doped compounds, evinced superconductivity with superconducting transition temperature, T<sub>c</sub>, increasing with higher Ga doping while the T<sub>C</sub> of the Ni<sub>2</sub>ZrAl<sub>1-x</sub>B<sub>x</sub> compounds marginally decreased from ~ 2.2 K (x = 0) to ~ 2.0 K (x = 0.15). The T<sub>c</sub> of 2.2 K observed for Ni<sub>2</sub>ZrAl is significantly larger than the reported value of 1.38 K. For all Cu-doped compounds, T<sub>c</sub> decreased with increase in Cu concentration and application of magnetic field. This decrease in T<sub>C</sub> is indicative of the phase transition that occurs near zero Kelvin, quantum phase transition. The dc magnetization data suggested the type-II superconductivity for all the compounds. The experimental results with related discussion is presented in detail. 2019-08-05 English text Miami University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=miami1564773139403356 http://rave.ohiolink.edu/etdc/view?acc_num=miami1564773139403356 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Physics Superconductivity Heusler compounds |
| spellingShingle |
Physics Superconductivity Heusler compounds Bhatt, Subhash Superconducting Properties of Selected Intermetallic Compounds. |
| author |
Bhatt, Subhash |
| author_facet |
Bhatt, Subhash |
| author_sort |
Bhatt, Subhash |
| title |
Superconducting Properties of Selected Intermetallic Compounds. |
| title_short |
Superconducting Properties of Selected Intermetallic Compounds. |
| title_full |
Superconducting Properties of Selected Intermetallic Compounds. |
| title_fullStr |
Superconducting Properties of Selected Intermetallic Compounds. |
| title_full_unstemmed |
Superconducting Properties of Selected Intermetallic Compounds. |
| title_sort |
superconducting properties of selected intermetallic compounds. |
| publisher |
Miami University / OhioLINK |
| publishDate |
2019 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=miami1564773139403356 |
| work_keys_str_mv |
AT bhattsubhash superconductingpropertiesofselectedintermetalliccompounds |
| _version_ |
1719456276478427136 |