chemistry

Lanthanum ytterbium oxide

Lanthanum ytterbium oxide 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 Lanthanum ytterbium oxide rather than just read about it. In short: Lanthanum ytterbium oxide is a solid inorganic compound of lanthanum, ytterbium and oxygen with the chemical formula of LaYbO3. This compound adopts the perovskite structure.

Key takeaways

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

Reference excerpt

Lanthanum ytterbium oxide is a solid inorganic compound of lanthanum, ytterbium and oxygen with the chemical formula of LaYbO3. This compound adopts the perovskite structure.

Synthesis LaYbO3 is not a naturally occurring mineral but it can prepared by solid state reaction between La2O3 and Yb2O3 at temperatures around 1200 °C. Single-crystals of LaYbO3 can also be grown of a molten hydroxide flux at 750 °C in sealed silver tubes. Thin films of LaYbO3 have also been fabricated by pulsed laser deposition.

Structure

LaYbO3 and other LaREO3 oxides (where RE=Ho, Y, Er, Tm, Yb, and Lu) compounds have an orthorhombic crystal structure with an internal symmetry described by the Pnma space group. The structure can be described by slightly distorted YbO6 octahedra tilted in the a−b+a− configuration according to Glazer's notation and antiparallel displaced La3+ ions. The rotation of the YbO6 octahedra reduces the coordination number of the La from 12 to 8. It exhibits a negative thermal expansion along the a and b axes.

Physical properties LaYbO3 exhibits a room-temperature permittivity, ɛr, of ~26, which decreases slightly to 25 at 10 K. LaYbO3 shows antiferromagnetic ordering with a weak ferromagnetism at 2.7 K. LaYbO3-based perovskites are also known to show proton conductivity at intermediate temperatures (600-800 °C).

References

Worked examples

Example 1 — a first encounter with Lanthanum ytterbium oxide

Start with the simplest possible case. Write down what Lanthanum ytterbium oxide 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 Lanthanum ytterbium oxide 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 Lanthanum ytterbium oxide 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 Lanthanum ytterbium oxide

In research: Lanthanum ytterbium oxide 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 Lanthanum ytterbium oxide 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: Lanthanum ytterbium oxide is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ceramic materials, Lanthanum compounds, Oxides, so understanding it makes those chapters shorter.
In everyday life: Look for Lanthanum ytterbium oxide 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 Lanthanum ytterbium oxide in 20 minutes

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

Frequently asked questions

What is Lanthanum ytterbium oxide in simple terms?

Lanthanum ytterbium oxide is a solid inorganic compound of lanthanum, ytterbium and oxygen with the chemical formula of LaYbO3. This compound adopts the perovskite structure.

Why does Lanthanum ytterbium oxide 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 Lanthanum ytterbium oxide?

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 Lanthanum ytterbium oxide.