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Paul Hagenmuller

Paul Hagenmuller is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Paul Hagenmuller rather than just read about it. In short: Paul Hagenmuller (August 3, 1921 – January 7, 2017) was a French chemist. Hagenmuller founded the Laboratoire de Chimie du Solide (Solid-State Chemistry Laboratory) of the French National Centre for Scientific Research (CNRS) and he served as its Director until 1985.

Key takeaways

  • Paul Hagenmuller belongs to chemistry; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Paul Hagenmuller to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Paul Hagenmuller from memory before moving on to harder problems.

Reference excerpt

Paul Hagenmuller (August 3, 1921 – January 7, 2017) was a French chemist. Hagenmuller founded the Laboratoire de Chimie du Solide (Solid-State Chemistry Laboratory) of the French National Centre for Scientific Research (CNRS) and he served as its Director until 1985. He is considered "one of the founders of solid-state chemistry."

Biography Hagenmuller was born in 1921 in Alsace, France. After studying in Strasbourg and Clermont-Ferrand, during WW2, Hagenmuller was imprisoned in the Buchenwald and Mittelbau-Dora concentration camps. During those years, he was involved in sabotaging German missiles. In 1950 he received his PhD from Sorbonne University. Subsequently, he spent two years teaching as a lecturer (maître de conférences) in Vietnam. He returned to France in 1956 and was appointed Professor of Inorganic Chemistry at the University of Rennes, working on "nonstoichiometry in vanadium and tungsten bronzes, two-dimensional oxyhalogenides, borides, and silicides, magnetic spinels". In 1961 he started working at the University of Bordeaux. Hagenmuller was noted for instigating cooperation between French researchers and researchers from the Soviet Union and Germany, his years in the concentration camps greatly affected his character. He also collaborated with noted scientists such as John Goodenough, Jacques Friedel and Nevill Francis Mott on insulator-to-metal transitions of vanadium oxides. In the 1970s, he started working with Neil Bartlett on metal fluorides. His most noted research discovery was the synthesis of LaCuO3 and LaSrCuO4, which would later become important superconductor materials. His work on sodium-ion batteries received great interest years after it was published. In 2018 Hagenmuller remained the 4th most cited author from the Journal of Solid State Chemistry.

Awards and decorations Croix de Guerre 1939–1945 Bundesverdienstkreuz (1985) Legion of Honour (1988) Gay-Lussac Humboldt Prize (1982) Prix de la Fondation de la Maison de la Chimie (1986)

Bibliography Hagenmuller, Paul (1972). Preparative Methods in Solid State Chemistry. Saint Louis: Elsevier Science. ISBN 978-0-323-14436-0. OCLC 1044715140. Bevan, D. J. M; Hagenmuller, P (1973). Non-stoichiometric compounds: tungsten bronzes, vanadium bronzes and related compounds. Elsevier. ISBN 978-1-4831-5176-2. OCLC 881849225. Gool, W. van; Hagenmuller, Paul (1978). Solid electrolytes: general principles, characterization, materials, applications. New York: Academic Press. ISBN 978-0-12-313360-1. OCLC 919504227. Hagenmuller, Paul (1985). Inorganic solid fluorides: chemistry and physics. Academic Press. ISBN 978-0-12-412490-5. OCLC 1007845115.

References

Worked examples

Example 1 — a first encounter with Paul Hagenmuller

Start with the simplest possible case. Write down what Paul Hagenmuller claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Paul Hagenmuller before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Paul Hagenmuller ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Paul Hagenmuller

In research
Paul Hagenmuller appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Paul Hagenmuller in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Paul Hagenmuller is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1921 births, 2017 deaths, 20th-century French chemists, so understanding it makes those chapters shorter.
In everyday life
Look for Paul Hagenmuller outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Paul Hagenmuller in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Paul Hagenmuller means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Paul Hagenmuller out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Paul Hagenmuller in simple terms?

Paul Hagenmuller (August 3, 1921 – January 7, 2017) was a French chemist. Hagenmuller founded the Laboratoire de Chimie du Solide (Solid-State Chemistry Laboratory) of the French National Centre for Scientific Research (CNRS) and he served as its Director until 1985.

Why does Paul Hagenmuller matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Paul Hagenmuller?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Paul Hagenmuller.

Tags

  • 1921 births
  • 2017 deaths
  • 20th-century French chemists
  • Academic staff of the University of Bordeaux
  • Academic staff of the University of Rennes
  • Buchenwald concentration camp survivors
  • French chemists
  • French materials scientists
  • French recipients of the Croix de Guerre (France)
  • French recipients of the Legion of Honour
  • Inorganic chemists
  • Members of the French Academy of Sciences

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