![]() Another approach is to locate the coil inside the gasket, requiring insulated leads to pass between the diamond culet and the gasket material without severing under high pressure. In some cases, this coil can be located outside of the gasket, 8–10 but in such a case, the signal to noise ratio is reduced due to poor filling fraction. 6,7 Pressures greater than 4 GPa can usually only be achieved by anvil cells, which present significant technical challenges because not only is the sample space limited (typically on the order of 10–100 nl), but an inductive coil must also surround the sample in order to excite and detect the resonance. 4,5 Although bulk measurements have been realized at pressures up to 500 GPa, 3 magnetic resonance has been limited to pressures below 20 GPa. 1–3 Magnetic resonance is an important tool that can be realized under pressure and can provide important microscopic information about the electronic degrees of freedom. ![]() A number of materials exhibit dramatic changes in electronic behavior at high pressure, and there is a great need to develop experimental tools to investigate electronic matter under extreme conditions.
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