金属水素化物用交流磁束計の構築とその性能評価

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  • キンゾク スイソカブツヨウ コウリュウジソクケイ ノ コウチク ト ソノ セイノウ ヒョウカ
  • Construction of Alternating-Current Magnetometer for Metal Hydride and Its Performance Tests

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An alternating-current magnetometer was assembled to measure the magnetic susceptibility of metal hydride in hydrogen atmosphere, and its performance tests were carried out. The magnetometer was designed to be integrated into the conventional pressure-composition-temperature (PCT) measurement system without any reconstruction. Calibration of the magnetometer was performed using a paramagnetic Gd_2O_3 powder, and it gave a linear relationship between the output signal and the magnetic moment of Gd_2O_3 powder. The magnetic susceptibility of PdH_x (0 ≤ x ≤ 0.7) was measured simultaneously with the PCT curve. The magnetic susceptibility of Pd hydride decreased with increasing hydrogen concentration in Pd and finally reached zero at the hydrogen concentration above 0.65. The behavior of magnetic susceptibility and PCT curves quantitatively agreed with the previously reported values.

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