H2020Индивидуална стипендия2017–2019

FUNMAH · Novel Functionality of Magnetic Shape Memory Alloys by Magnetic Hysteresis Control

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2017-03-01 → 2019-02-28
Финансиране от ЕС: 154 721 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Магнитните сплави с памет на формата се изследват чрез промяна на техните свойства, за да се постигне например изключване на намагнитването чрез механичен натиск. Това помага за създаването на по-ефективни сензори, медицински микропомпи и бързи магнитни задвижващи механизми.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Novel Functionality of Magnetic Shape Memory Alloys by Magnetic Hysteresis Control

"In the project we investigate magnetic shape memory (MSM) alloys, which are smart materials exhibiting large shape changes in magnetic field and related wide range of magnetomechanical functionalities. They are promising for applications such as fast magnetic actuators, low power magnetic actuators, magnetic sensors, energy harvesters, medical micropumps, or magneto-structural memory. It was proposed by the fellow that novel functionalities of MSM alloys can be obtained when magnetic coercivity of the material is enlarged. Such novel functionalities are for example mechanically-induced demagnetization and remanent magnetization rotation. MSM material with enlarged magnetic coercivity behaves as a kind of smart semi-permanent magnet, since it its magnetization can be rotated or ""turned off"" by mechanical stress. This is interesting scientifically but also for applications. The objective of this project was to build comprehensive understanding of the magnetic coercivity and novel functionalities of Ni-Mn-Ga(-B) MSMAs. Particular topics were i) what is the physical mechanism of magnetic coercivity enlargement in prototype Ni-Mn-Ga(-B) magnetic shape memory alloy, ii) what is the physical mechanism underlying the functionalities, and iii) illustration of the functionality in applications. The most of the project objectives was achieved. Most importantly, we were able to reveal the physical mechanisms behind the magnetic coercivity and we showed the way in which the magnetic coercivity can be controlled and thus the novel functionality enabled in Ni-Mn-Ga based MSM alloys."

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Magnetic shape memory alloys (MSMAs) are smart materials which exhibit large shape changes in magnetic field. Novel functionalities of MSMAs, such as mechanically-induced demagnetization, originating from the enlarged magnetic hysteresis (MAH), have recently been introduced by the fellow. The finding opens a new topic in the field and extends significantly the application potential of MSMAs. Large scientific and commercial impact is expected if the research is further pursued. The objective of this project is to build comprehensive understanding of the novel functionalities of MSMAs resulting from the enlarged MAH and to confirm them experimentally. First, we will identify the causes of enlarged MAH in Ni-Mn-Ga-(B) alloys and explain the physical mechanisms underlying the novel functionalities. The acquired knowledge will be used to produce new MSMAs with strengthened novel functionalities. These new alloys will be characterized and used in demo applications built within the project to explain and merchandise the advantages of novel functionalities to industrial community and general public. The project outputs will advance the fields of magnetism, martensite, and MSMAs by explaining the novel functionality paradigm based on interaction of hard ferromagnetic and ferroelastic microstructures. The outputs will be also of practical value, shifting the MSMAs towards new types of practical applications. The Host Institute will enable the fellow an access to unique instrumentation and expertise in magnetism and alloy production while simultaneously will integrate the fellow as a senior researcher. In return, the fellow will bring his unique combined industrial and academic experience in the field of MSMAs as well as new collaborators from Finland, Poland, Germany, and USA. The project boosts the fellow's research skills in experimental physics and initiates his independent research career in the Czech Republic.

Оригинален текст от CORDIS (на английски).

Участници

FYZIKALNI USTAV AV CR, VVI · PRAHA 8КоординаторЧехия