What question did this study set out to answer?

To measure the magnetization and susceptibility of high-purity yttrium iron garnet across a broad temperature range and calculate its molecular field coefficients.

June 15, 1964Physical Review

Molecular Field Model and the Magnetization of YIG

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Authors

EAElmer E. AndersonMarshall Space Flight Center

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Implication

Experimental study reveals temperature-dependent magnetization and exchange constants in yttrium iron garnet, indicating intrasublattice interactions are stronger than previously estimated.

Key Points

To measure the magnetization and susceptibility of high-purity yttrium iron garnet across a broad temperature range and calculate its molecular field coefficients.
Measured magnetic susceptibility and spontaneous magnetization of high-purity YIG from 4.2°K to 650°K using a precision vacuum balance.
Fitted experimental total magnetization curves on an IBM 7090 computer to calculate molecular field coefficients, sublattice magnetizations, and exchange interactions.
Spontaneous magnetization exhibited a saturation value of 37.90 emu/g at 4.2°K and 27.40 emu/g at 292°K.
The Curie point occurred at 559°K, marked by both the loss of spontaneous magnetic moment and a sharp discontinuity in magnetic susceptibility.
Molecular field model analysis demonstrated that intrasublattice exchange interactions are substantially stronger than previous estimations indicated.

Cite This Study

Elmer E. Anderson (1964) studied this question.

synapsesocial.com/papers/6a77f7e2249abce98a1e7a02 https://doi.org/10.1103/physrev.134.a1581

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Implication

Experimental study reveals temperature-dependent magnetization and exchange constants in yttrium iron garnet, indicating intrasublattice interactions are stronger than previously estimated.

Molecular Field Model and the Magnetization of YIG

Discussion

Member takes

Implication

Key Points

Cite This Study

Molecular Field Model and the Magnetization of YIG

Discussion

Member takes

Implication

Key Points

Cite This Study

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