Louis Eugène Félix Néel (22 November 1904 – 17 November 2000) was a French

physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate caus ...

born in

Lyon Lyon,, ; Occitan: ''Lion'', hist. ''Lionés'' also spelled in English as Lyons, is the third-largest city and second-largest metropolitan area of France. It is located at the confluence of the rivers Rhône and Saône, to the northwest of t ...

who received the

Nobel Prize The Nobel Prizes ( ; sv, Nobelpriset ; no, Nobelprisen ) are five separate prizes that, according to Alfred Nobel's will of 1895, are awarded to "those who, during the preceding year, have conferred the greatest benefit to humankind." Alfr ...

for

Physics Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge which r ...

in 1970 for his studies of the magnetic properties of

solid Solid is one of the State of matter#Four fundamental states, four fundamental states of matter (the others being liquid, gas, and Plasma (physics), plasma). The molecules in a solid are closely packed together and contain the least amount o ...

Biography

Néel studied at the

Lycée du Parc The Lycée du Parc is a public secondary school located in the sixth ''arrondissement'' of Lyon, France. Its name comes from the Parc de la Tête d'Or, one of Europe's largest urban parks, which is situated nearby. It provides a ''lycée''-level ...

and was accepted at the

École Normale Supérieure École may refer to: * an elementary school in the French educational stages normally followed by secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing in région Île-de-France * École, Savoi ...

Paris Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. S ...

. He obtained the degree of Doctor of Science at the

University of Strasbourg The University of Strasbourg (french: Université de Strasbourg, Unistra) is a public research university located in Strasbourg, Alsace, France, with over 52,000 students and 3,300 researchers. The French university traces its history to the ea ...

. He was corecipient (with the

Swedish Swedish or ' may refer to: Anything from or related to Sweden, a country in Northern Europe. Or, specifically: * Swedish language, a North Germanic language spoken primarily in Sweden and Finland ** Swedish alphabet, the official alphabet used by ...

astrophysicist

Hannes Alfvén Hannes Olof Gösta Alfvén (; 30 May 1908 – 2 April 1995) was a Swedish electrical engineer, plasma physicist and winner of the 1970 Nobel Prize in Physics for his work on magnetohydrodynamics (MHD). He described the class of MHD waves now ...

) of the

for

in 1970 for his pioneering studies of the magnetic properties of

s. His contributions to

solid state physics Solid-state physics is the study of rigid matter, or solids, through methods such as quantum mechanics, crystallography, electromagnetism, and metallurgy. It is the largest branch of condensed matter physics. Solid-state physics studies how the l ...

have found numerous useful applications, particularly in the development of improved

computer A computer is a machine that can be programmed to Execution (computing), carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as C ...

memory units. About 1930 he suggested that a new form of magnetic behavior might exist; called

antiferromagnetism In materials that exhibit antiferromagnetism, the magnetic moments of atoms or molecules, usually related to the spins of electrons, align in a regular pattern with neighboring spins (on different sublattices) pointing in opposite directions. ...

, as opposed to

ferromagnetism Ferromagnetism is a property of certain materials (such as iron) which results in a large observed magnetic permeability, and in many cases a large magnetic coercivity allowing the material to form a permanent magnet. Ferromagnetic materials ...

. Above a certain temperature (the

Néel temperature In physics and materials science, the Curie temperature (''T''C), or Curie point, is the temperature above which certain materials lose their permanent magnetic properties, which can (in most cases) be replaced by induced magnetism. The Cur ...

) this behaviour stops. Néel pointed out (1948) that materials could also exist showing

ferrimagnetism A ferrimagnetic material is a material that has populations of atoms with opposing magnetic moments, as in antiferromagnetism, but these moments are unequal in magnitude so a spontaneous magnetization remains. This can for example occur when t ...

. Néel has also given an explanation of the weak magnetism of certain rocks, making possible the study of the history of

Earth's magnetic field Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun. The magnetic f ...

. He is the instigator of the

Polygone Scientifique The Polygone Scientifique (en: Scientific Polygon) is a neighborhood of the city of Grenoble in France. It includes a significant number of research centers in a presque-isle between Isère (river), Isère and Drac (river), Drac. History Polygo ...

Grenoble lat, Gratianopolis , commune status = Prefecture and commune , image = Panorama grenoble.png , image size = , caption = From upper left: Panorama of the city, Grenoble’s cable cars, place Saint- ...

. The

Louis Néel Medal The Louis Néel Medal has been awarded annually since 1994 by the European Geophysical Society (EGS), usually for magnetism, palaeomagnetism and petrophysics, and is named after the Nobel Laureate Louis Néel, known for his research in the field o ...

, awarded annually by the

European Geophysical Society The European Geosciences Union (EGU) is a non-profit international union in the fields of Earth, planetary, and space sciences whose vision is to "realise a sustainable and just future for humanity and for the planet." The organisation has headq ...

, is named in Néel's honour. Néel died at

Brive-la-Gaillarde Brive-la-Gaillarde (; Limousin dialect of oc, Briva la Galharda) is a commune of France. It is a sub-prefecture and the largest city of the Corrèze department. It has around 46,000 inhabitants, while the population of the agglomeration was 7 ...

on 17 November 2000 at the age 95, just 5 days short of 96th birthday.

Awards and honours

Néel received numerous awards and honours for his work including:

Awards

*Hughes Prize of the

Académie des sciences The French Academy of Sciences (French: ''Académie des sciences'') is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French scientific research. It was at the ...

(1935) *Félix Robin Prize of the Société française de physique (1938) *André Blondel Medal (1948) *Grand prix du conseil de l’association « Au service de la pensée française » (1949) *

Holweck Prize The Fernand Holweck Medal and Prize is a major European prize for Physics awarded jointly every year by the British Institute of Physics (IOP) and the Société Française de Physique (SFP). It is one of the four Grand Prix of the SFP and one of ...

(1952) *Elected Foreign Member of the

Royal Netherlands Academy of Arts and Sciences The Royal Netherlands Academy of Arts and Sciences ( nl, Koninklijke Nederlandse Akademie van Wetenschappen, abbreviated: KNAW) is an organization dedicated to the advancement of science and literature in the Netherlands. The academy is housed ...

(1959) * Three Physicists Prize (1963) *Gold Medal of CNRS (1965) * Elected Foreign Member of the Royal Society (ForMemRS) in 1966 *Nobel Prize in Physics (1970) *Great Gold Medal of l’Électronique (1971) *Great Gold Medal of the Société d’encouragement pour la recherche et l’invention (1973) *Founding member of the

World Cultural Council The World Cultural Council is an international organization whose goals are to promote cultural values, goodwill and philanthropy among individuals. The organization founded in 1981 and based in Mexico, has held a yearly award ceremony since 198 ...

(1981).

Distinctions

Owing to his involvement in national defense, particularly through research in the protection of warships by demagnetization against magnetic mines, he received numerous distinctions: *

Legion of Honour The National Order of the Legion of Honour (french: Ordre national de la Légion d'honneur), formerly the Royal Order of the Legion of Honour ('), is the highest French order of merit, both military and civil. Established in 1802 by Napoleon, ...

: **Knight (for exceptional military services) (1940) **Officer (1951) **Commander (1958) **Grand Officer (1966) **Grand Cross (1974) *

Croix de Guerre The ''Croix de Guerre'' (, ''Cross of War'') is a military decoration of France. It was first created in 1915 and consists of a square-cross medal on two crossed swords, hanging from a ribbon with various degree pins. The decoration was first awa ...

with Palm (1940) *Commander of the

Ordre des Palmes Académiques A suite, in Western classical music and jazz, is an ordered set of instrumental or orchestral/concert band pieces. It originated in the late 14th century as a pairing of dance tunes and grew in scope to comprise up to five dances, sometimes with ...

(1957) *Knight of the Order of Social Merit (1963) *Grand Cross of the National Order of Merit (1972) *Honorary Admiral (French Navy)

References

External links