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The stability of a periodic array of parallel stripe domains in LPE garnet films is investigate both theoretically and experimentally. The vehicle used is the confined region of the bubble lattice device  which allows the initialization of straight parallel stripes as well as allowing a variation in the period of the stripe domains. The domains are analyzed wlth respect to the stable number of straight parallel stripes for a given bias field and to their stability with respect to sinusoidal distortions (buckling). The results show that a stable range of bias exists between the upper limit of stripe contraction and the lower limit of stripe buckling.