Qingqi Zeng, Zhiwei Du, Xiaolei Han, Binbin Wang, Guangheng Wu, Enke Liu
{"title":"观察脱离边界-重组阶段竞争的原子位移转变","authors":"Qingqi Zeng, Zhiwei Du, Xiaolei Han, Binbin Wang, Guangheng Wu, Enke Liu","doi":"arxiv-2409.10945","DOIUrl":null,"url":null,"abstract":"During the phase transitions, diverse states evolve with multiplex phenomena\narising from the critical competition. In this study, a displacive martensitic\ntransformation with a lattice shear distortion was unexpectedly observed at the\nreconstructive phase boundary that usually connects multiple phases without\ncrystallographic relation, in a Ni-Co-Mn-V all-d-metal alloy system.\nExperiments and theoretical calculations suggest that the parent phase becomes\nincreasingly unstable when approaching the phase boundary. The\nlattice-distorted transformation with moderate first-order nature survives due\nto the critical phase competition from the structural frustration, in which the\ncomparable energy and the diminished formation preference of different phases\nemerge. In this critical state, the phase selection including the martensitic\nphase transformation can be tuned by external fields such as rapid cooling,\nannealing and magnetic field. Our research reveals a novel manner to\ndestabilize the parent phase, through which one could attain new functional\nmaterials based on the phase transitions.","PeriodicalId":501234,"journal":{"name":"arXiv - PHYS - Materials Science","volume":"20 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Observation of atomically displacive transformation out of the boundary-reconstructive phase competition\",\"authors\":\"Qingqi Zeng, Zhiwei Du, Xiaolei Han, Binbin Wang, Guangheng Wu, Enke Liu\",\"doi\":\"arxiv-2409.10945\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"During the phase transitions, diverse states evolve with multiplex phenomena\\narising from the critical competition. In this study, a displacive martensitic\\ntransformation with a lattice shear distortion was unexpectedly observed at the\\nreconstructive phase boundary that usually connects multiple phases without\\ncrystallographic relation, in a Ni-Co-Mn-V all-d-metal alloy system.\\nExperiments and theoretical calculations suggest that the parent phase becomes\\nincreasingly unstable when approaching the phase boundary. The\\nlattice-distorted transformation with moderate first-order nature survives due\\nto the critical phase competition from the structural frustration, in which the\\ncomparable energy and the diminished formation preference of different phases\\nemerge. In this critical state, the phase selection including the martensitic\\nphase transformation can be tuned by external fields such as rapid cooling,\\nannealing and magnetic field. Our research reveals a novel manner to\\ndestabilize the parent phase, through which one could attain new functional\\nmaterials based on the phase transitions.\",\"PeriodicalId\":501234,\"journal\":{\"name\":\"arXiv - PHYS - Materials Science\",\"volume\":\"20 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Materials Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.10945\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Materials Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.10945","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Observation of atomically displacive transformation out of the boundary-reconstructive phase competition
During the phase transitions, diverse states evolve with multiplex phenomena
arising from the critical competition. In this study, a displacive martensitic
transformation with a lattice shear distortion was unexpectedly observed at the
reconstructive phase boundary that usually connects multiple phases without
crystallographic relation, in a Ni-Co-Mn-V all-d-metal alloy system.
Experiments and theoretical calculations suggest that the parent phase becomes
increasingly unstable when approaching the phase boundary. The
lattice-distorted transformation with moderate first-order nature survives due
to the critical phase competition from the structural frustration, in which the
comparable energy and the diminished formation preference of different phases
emerge. In this critical state, the phase selection including the martensitic
phase transformation can be tuned by external fields such as rapid cooling,
annealing and magnetic field. Our research reveals a novel manner to
destabilize the parent phase, through which one could attain new functional
materials based on the phase transitions.