两级多砧低温测定仪的研制

IF 1.2 Q3 PHYSICS, MULTIDISCIPLINARY

Papers in Physics Pub Date : 2019-01-01 DOI:10.4279/pip.110006

K. Ishigaki, J. Gouchi, S. Nagasaki, J. G. Cheng, Y. Uwatoko

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引用次数: 0

摘要

两段式6-8多砧(MA8)装置是一种重要的大体积高压技术，广泛应用于室温及以上高压矿物学和材料合成领域。最近，我们成功地开发了一种用于低温物性测量的两级MA8仪器。为了减小圆柱形模块的总尺寸，顶部和底部的第一级砧被制作成一个整体，圆柱形模块被放入顶部加载的高压低温恒温器中，并由1000吨液压机压缩。为了将电引线从充满液体压力传递介质的样品容器内部引入，专门设计了一种可浇注的、带集成鳍片的分裂八面体衬垫。利用截断边长为3mm的碳化钨(WC)二级立方体和边长为6mm的八面体垫片，我们成功地在室温下产生了超过20gpa的压力。由于使用烧结金刚石第二阶段立方体可以将高压极限推至近100 GPa，因此我们的MA8仪器具有很大的潜力，可以扩大当前的压力容量，用于大样本量的精确低温测量。编辑:A. Goñi, A. Cantarero, J. S. Reparaz

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Development of two-stage multi-anvil apparatus for low-temperature measurements

The two-stage 6-8 multi-anvil (MA8) apparatus is an important large-volume, high-pressure technique that has been widely used in the high pressure mineralogy and material synthesis, mainly at room temperature or above. Recently, we have successfully developed a two-stage MA8 apparatus for low-temperature physical property measurements. The first-stage anvils at top and bottom sides are fabricated as a single piece in order to reduce the total size of the cylindrical module, which is put in a top-loading high pressure cryostat and compressed by a 1000 ton hydraulic press. A castable, split octahedral gasket with integrated fin was specifically designed in order to introduce the electrical leads from the inside sample container filled with a liquid pressure transmitting medium. By using tungsten carbide (WC) second-stage cubes with a truncated edge length of 3 mm and an octahedral gasket with an edge length of 6 mm, we have successfully generated pressure over 20 GPa at room temperature. Since the high pressure limit can be pushed to nearly 100 GPa by using the sintered diamond second-stage cubes, our MA8 apparatus has a great potential to expand the current pressure capacity for precise low-temperature measurements with a large sample volume. Edited by: A. Goñi, A. Cantarero, J. S. Reparaz

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来源期刊

Papers in Physics PHYSICS, MULTIDISCIPLINARY-

CiteScore

1.90

自引率

0.00%

发文量

期刊介绍： Papers in Physics publishes original research in all areas of physics and its interface with other subjects. The scope includes, but is not limited to, physics of particles and fields, condensed matter, relativity and gravitation, nuclear physics, physics of fluids, biophysics, econophysics, chemical physics, statistical mechanics, soft condensed matter, materials science, mathematical physics and general physics. Contributions in the areas of foundations of physics, history of physics and physics education are not considered for publication. Articles published in Papers in Physics contain substantial new results and ideas that advance the state of physics in a non-trivial way. Articles are strictly reviewed by specialists prior to publication. Papers in Physics highlights outstanding articles published in the journal through the Editors'' choice section. Papers in Physics offers two distinct editorial treatments to articles from which authors can choose. In Traditional Review, manuscripts are submitted to anonymous reviewers seeking constructive criticism and editors make a decision on whether publication is appropriate. In Open Review, manuscripts are sent to reviewers. If the paper is considered original and technically sound, the article, the reviewer''s comments and the author''s reply are published alongside the names of all involved. This way, Papers in Physics promotes the open discussion of controversies among specialists that are of help to the reader and to the transparency of the editorial process. Moreover, our reviewers receive their due recognition by publishing a recorded citable report. Papers in Physics publishes Commentaries from the reviewer(s) if major disagreements remain after exchange with the authors or if a different insight proposed is considered valuable for the readers.