论文标题
相位分离的锰矿中跨相边界的不可逆热流动
Irreversible Heat Flow Across Phase Boundaries in Phase-Separated Manganites
论文作者
论文摘要
我们已经通过直接测量热流的直接测量来调查熵的变化，这是固定温度下的磁场的函数。在该组成下，该化合物显示竞争性的电荷订购/抗磁磁性（CO/AF）接地状态。在固定温度下，我们观察到熵的滞后随施加场的函数的增加。热通量显示出逐渐不可逆的滞后，随着温度降低，这表征了两个竞争基态之间的能屏障。热损耗的增加与相分开状态的磁粘度的增加有关。 关键字：锰酸盐，雪崩效应，相变，热流，DSC，熵。通讯作者：[email protected]。 2020年4月10日，这篇JAC-Elsevier文章被接受。然而，它的在线出版物显示了许多错误：截止文本，缺少的图形字幕，不完整的表...这都不是我们的错！这使我们的论文难以阅读，学习和/或理解。此复制是我们的最终（无错误！）修订。当引用我们的卷曲纸时，还请参考此Arxiv印刷品。谢谢您的理解
We have investigated the change in entropy with direct measurements of heat flow as a function of magnetic field at fixed temperatures across the entire phase diagram of the phase-separated (PS) compound La$_{0.25}$Pr$_{0.375}$Ca$_{0.375}$MnO$_3$ (LPCMO). At this composition, the compound shows competing charge-ordered/antiferromagnetic (CO/AF) ground states. At a fixed temperature, we observe an increase in hysteresis in the entropy as a function of the applied field. The heat flux shows progressively irreversible hysteresis, which characterizes the energy barriers between the two competing ground states, as the temperature is lowered. The increase in the heat loss correlates with the increase in magnetic viscosity in the phase-separated state. Keywords: manganites, avalanche effect, phase transition, heat flow, DSC, entropy. Corresponding author: [email protected] . On 10 April 2020, this JAC-Elsevier article was accepted. Yet, its online publication shows numerous errors: Cut-off text, missing Figure Captions, incomplete Table ... None of which is our fault! This makes our paper hard to read, study and/or understand. This reproduction is our final (error-free!) revision. When citing our refereed paper, please also refer to this arXiv print. Thank you for understanding
