2013 Fiscal Year Final Research Report
Thermodynamical investigation of pressure-temperature phase diagram of oxygen
| Project/Area Number |
23740271
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics II
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| Research Institution | The University of Tokyo (2013)
Osaka University (2011-2012) |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Keywords | 固体酸素 / 圧力－温度相図 / 交流比熱測定 / 共振周波数測定 |
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| Research Abstract |
Solid oxygen is the only simple homonuclear diatomic molecule having a magnetic degree of freedom, and shows various magnetisms and crystal structures as a function of temperature and pressure. Although there are several suggestions of pressure-temperature phase diagram through mainly optical experiments, the diagram is still controversial. In this research project, we have tried to determine the phase boundary of solid oxygen thermodynamically. We have established the diagram of solid oxygen up to 5 GPa and below room temperature via thermodynamic quantities, such as specific heat and magnetic susceptibility under pressures, developed in this project, and discovered a possible new solid phase.
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