Avalanches during recrystallization in radiation-damaged pyrochlore and allanite: Statistical similarity to phase transitions in functional materials
Avalanches during recrystallization in radiation-damaged pyrochlore and allanite: Statistical similarity to phase transitions in functional materials
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DOI：
10.1063/1.5133439
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发表时间：
2019-12
影响因子：
4
通讯作者：
T. Beirau;Anna Shelyug;A. Navrotsky;H. Pöllmann;E. Salje
中科院分区：
文献类型：
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作者：
T. Beirau;Anna Shelyug;A. Navrotsky;H. Pöllmann;E. Salje
用差示扫描量热法分析了高度无序辐射损伤的铀或钍矿物焦绿石和尿囊石的放热、结构重组过程的突变行为。热信号以热峰的形式出现，形成爆裂的噪声频谱。热峰的能量服从指数e∼1.61-1.65，与平均场理论预测的力积分能量分布符合得很好。用差示扫描量热法分析了高度无序辐射损伤的铀或钍矿物焦绿石和尿囊石的放热、结构重组过程的跳跃行为。热信号以热峰的形式出现，形成爆裂的噪声频谱。热峰的能量服从指数e∼1.61-1.65，与平均场理论预测的力积分能量分布符合得很好。因此，再结晶在统计上等同于马氏体在外压下的崩塌和铁电材料的转变。
Differential scanning calorimetry has been employed to analyze the jerky behavior of exothermic, structural reorganization processes of the highly disordered radiation-damaged uranium or thorium containing minerals pyrochlore and allanite. The thermal signals occur as thermal spikes forming crackling noise spectra. The energy of the thermal spikes follows power-law behavior with an exponent e ∼ 1.61–1.65, which is in good agreement with force integrated energy distributions predicted by mean field theory. The recrystallization is hence statistically identical to the collapse of martensites under external pressure and the switching of ferroelectric materials.Differential scanning calorimetry has been employed to analyze the jerky behavior of exothermic, structural reorganization processes of the highly disordered radiation-damaged uranium or thorium containing minerals pyrochlore and allanite. The thermal signals occur as thermal spikes forming crackling noise spectra. The energy of the thermal spikes follows power-law behavior with an exponent e ∼ 1.61–1.65, which is in good agreement with force integrated energy distributions predicted by mean field theory. The recrystallization is hence statistically identical to the collapse of martensites under external pressure and the switching of ferroelectric materials.